sellingPlanGroups created_at search query filter isn't working

Topic summary

A developer reports that the created_at query filter for sellingPlanGroups in Shopify’s GraphQL Admin API is not functioning as expected.\n\nIssue Details:\n- When querying with `query: \

Summarized with AI on November 19. AI used: claude-sonnet-4-5-20250929.

suppose a query like so

sellingPlanGroups(first: 1, query: "created_at:'2023-07-02T04:23:55Z'"){
      nodes {
        createdAt
      }
    }

In my tests, this always returns the nodes as an empty array… even if the date matches the sellingPlanGroup.createdAt exactly.

{"data":{"sellingPlanGroups":{"nodes":[]}}

I can drop the query filter and the nodes will be populated with the sellingPlanGroup matching the createdAt date.

{"data":{"sellingPlanGroups":{"nodes":[{createdAt:"2023-07-02T04:23:55Z"}]}}

I believe the filter is breaking silently on Shopify’s side. The docs don’t give any other description. Presumably it is the same as the created_at example in the filter docs.

Hey @appdev2023

Can you DM me store details so I can replicate please?