Hello,
My Google & Yotube app suddenly stopped syncing products with GMC. Google and Shopify said that everything looks fine.
So I had to reinstall the app which in turn sent another product feed to GMC. Products did not went through review, they were recognized by GMC.
Now I have to delete my old feed. A product with 200 conversions now has 0 metrics. Will this affect me ?
One LLM told me that conversion data is on account level so I am safe. What do you think? Also, my campaigns were focused on conversion value. Can I still run it? Or do I need to go maximize clicks or something, for the algoritm to learn again. (I got 85 conversions in the last 13 days, if it helps).
Thank you in advance!
Good news, the other LLM is right on the conversion data point. Google Ads conversion data is stored at the account level, not the feed or product level, so deleting the old feed won’t wipe your historical conversion data. You’re safe there.
On the campaign side though, here’s the nuance:
Your conversion value campaigns; you can absolutely keep running them. 85 conversions in 13 days is actually a solid signal and Google’s algorithm has enough recent data to continue optimizing without needing to reset to maximize clicks.
The general rule is Smart Bidding needs 30-50 conversions in a 30 day window to perform well; you’re close to that already so don’t panic and switch strategies. Switching to maximize clicks now would actually set you back further by resetting the learning phase unnecessarily.
What to watch for:
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A short learning period of 1-2 weeks while Google reconciles the new feed is normal
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Monitor your impression share and conversion rate closely during that window
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If performance drops significantly after 2 weeks then consider a temporary maximize clicks phase
Reinstalling the app was the right call, the feed recognition without full review actually suggests Google matched your products cleanly to the existing catalog. That’s a good sign.
Just sit back and watch the algorithm settle before making any bidding changes
Thank you for your answear!
My new products have the same ID but different prefix. I tried everything to get the same prefix again. My old products had SHOPIFY_RO_ID and the new ones have SHOPIFY_ZZ_ID. (ID is the same)
Do you think there’s any chance that Google will “recognize” the products and use the data?
Thank you!
Unfortunately the prefix change is the tricky part here, Google treats SHOPIFY_RO_ID and SHOPIFY_ZZ_ID as completely different products even if the underlying ID is identical. So the historical per-product performance data won’t carry over automatically.
The good news is your account level conversion data is still intact as we discussed ,so your Smart Bidding campaigns can still draw from that signal.
A few things worth trying:
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Check if there’s a way to force the original prefix back by reinstalling the original regional version of the Google channel app — the RO suffix suggests it may have been a region-specific install
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Contact Shopify Support specifically asking why the feed prefix changed from RO to ZZ on reinstall — they may be able to restore it
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If the prefix can’t be recovered, give it 2-3 weeks, Google’s algorithm is surprisingly good at relearning product performance when conversion volume is healthy like yours
Your 85 conversions in 13 days gives the algorithm enough fuel to relearn relatively quickly so don’t stress too much. The learning period will just be a little longer than usual.
Great, thank you again!
In the meantime I will ask 3rd party feed apps if there’s a possibility to change the feed label when using their apps.
I hope I can do something about it. It was going great and I have like 2.5 years worth of data and spent 50k. Not big numbers by any means but I m not a ads specialist or big company.
Good thing it sounds like you didn’t loose the data. Are you keeping a back up outside of Google ads?
the conversion data is safe since google stores that at the account level, not per product. but the prefix change from SHOPIFY_RO to SHOPIFY_ZZ is the real problem because google treats those as entirely new product listings. all the performance history and learning data your campaigns built up are tied to the old IDs.
if your campaigns are using performance max, they’ll need to re-learn which products convert best so expect a rough 2-3 weeks while the algorithm rebuilds. keep your bids and budgets conservative during that period. for the prefix issue specifically i’d open a case with shopify support and ask if there’s a way to force the original prefix back, that would skip the whole re-learning problem.
Reinstalling the Google and YouTube app and creating a new product feed should not erase your historical Google ads conversion data. Conversion are stored at the google ads account level, so Smart bidding can still use past conversion history when optimizing campaigns.
With approximately 85 conversion over the last 13 days, there is generally enough recent conversion volume to continue using conversion- value- based bidding rather than switching to Maximize Clicks. Maintaining your current bidding strategy is usually the better option unless performance drops significantly.
The bigger concern is the product ID change. Previously, products were submitted with the SHOPIFY_RO_ prefix, while the new feed is using SHOPIFY_ZZ_. Even if the underlying Shopify product IDs remain the same, Google Merchant Center may interpret these as entirely new products. If that happens, product-level performance history, learning, and reporting may not transfer to the new listings.
A few steps worth taking:
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Contact Shopify support do determine why the product ID prefix changed after the reinstall.
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Verify whether the reinstall, store region settings, or feed configuration triggered the new prefix.
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Check if any third-party feed management apps allow control over the ID format or feed labels.
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Monitor campaign performance closely during the next few weeks.
If the original product IDs cannot be restored, expect a temporary learning period of roughly 2-3 weeks while Google rebuilds product-level- performance data. However, your overall account coversion history and Smart Bidding signals should remain intact, which helps minimize disruption.
historical conversion data is unlikely to be lost, but the product ID change may cause Google to treat the items as new products, potentially affecting product-level reporting and optimization until sufficient new data is collected
Michross is right on the conversion data - you’re safe there. One thing worth watching: if your campaigns were heavily optimized toward that product feed specifically, Google’s algorithm may need a short re-learning window even though the historical data is intact. 85 conversions in 13 days is a strong enough signal that Smart Bidding should recover quickly without switching strategies.
Hi @Alexx345
Your account-level conversion history should remain, but the new feed may generate different product IDs. If so, product-level performance history – including the 200 conversions shown for that item – will not transfer to the new listing.
Before removing the old feed, make sure the new products are approved and active, conversion tracking is working properly, and your campaigns are using the new feed.
With 85 conversions in 13 days, I wouldn’t switch immediately to Maximize Clicks, as that could disrupt optimization further. If your conversion values remain accurate, keep the current value-based bidding strategy and allow it some time to adjust. You may see temporary fluctuations, but the campaign should not need to relearn everything from scratch.
Hi @Alexx345 , were you able to resolve the product feed issue and keep your campaigns running normally after removing the old feed?
Hey @Alexx345 ,
hope you doing well!
If your conversion tracking is still configured correctly, historical conversion data is generally retained at the account level. I’d keep using Maximize Conversion Value and monitor performance for a few days before making any bidding changes.