Problem: Certain product attribute updates are not being seen on the front end. Irrespective of re-indexing, cleaning and flushing the cache, etc.
If I change them via Update Mass Attributes, then that's ok, but not if I update each product individually. The update sticks but is not shown on the front end, nor in the product's Admin grid.
Cause: Here's what I think has happened. The Magento 1.9 store had two websites, with products shared between both sites/stores. Some attributes (short description, etc) were maintained at a store level, others (SKU, etc) at the default level.
These were migrated to Magento 2.2.4 but then the decision was made to remove the second website. The decision was then to switch to Single Store Mode.
What I think has happened is that certain attributes like short description are now "set" to be udpated at store level scope - but the Admin and the front end are showing "default" scope values. In Single Store Mode you can't see/change the "store" level attributes. Hence I can't see changes to the short description in the Admin product's grid nor on the front end.
Solution: Is there a way to force all attributes back to the default store scope?
Any suggestions gratefully rec'd.