After Upgrading from 103.4.51 to 103.4.53 all product attributes are re-saved in the store view scope

[andrewdallow]

Issue Description

A client site was upgraded from 103.4.51 to 103.4.53 and after a week or so we noticed product attributes for random products were being re-saved at the store view scope. The products did not previously have attributes saved in this scope.

Note that ALL product attributes within these products were re-saved at the store view (not just some), excluding attributes that are empty or global attributes.

We have 2 separate client sites that have experienced the same problem.

I suspect it is related to this change:

• Optimize the product grid to avoid access the ecommerce table #1714

Preconditions

1. Magento CE 2.4.5-p4 (also occurs on 2.4.4-p5)
2. mc-magento2 version 103.4.53
3. Store has only 1 store view (single storefront)
4. Have existing products where attributes are only saved in the 'All Stores' Scope only.
5. Ensure product sync to Mailchimp is enabled

Steps to reproduce

• Upgrade to version mc-magento2 version 103.4.53
• Make some changes to a product to trigger a re-sync (not sure if this will cause it)
• After some time, some products suddenly have all attributes saved in the store view scope

Actual and Expected result

Expected result:
Products with attributes only saved at the 'All Stores' scope should remain saved at that scope.
Actual result:
Some products suddenly have all attributes saved in the store view scope.

[tschirmer]

Was this ever confirmed / solved? We're experiencing the same thing, when products sync into Mailchimp.

[tschirmer]

This was reported here
#1758