Shella theme update (4.14.1) settings not importing

[CharlieN67]

Hi all, I'm new to the community but have been working on my Shopify platform/website for 3 years or so.

I've just uploaded the latest Shella theme update (4.14.1) and imported the theme settings from my previous version (4.10.0). I've done this successfully 3 times in the past with no real problems. However, this time, many of my customisations are missing....filter settings and custom tabs for example. There's a lot of extra work to recreate these. Given that the speed of my website has taken a dive since Shopify 2.0 was launched (from around 70 to 20), I'm keen to go ahead with the update. Here are my questions:

1. Does anybody know why the imported settings 'dropped' a bunch of my customisations this time around?
2. Does anybody know a quick fix for 'transferring' the missing settings from my previous (still live) theme?

Perhaps @MPI_themes can help?

Thanks in advance