My list of sizes contained many duplicates values. I have deleted all of the duplicates.
Deleting the duplicate sizes updated a lot of sizes attached to simple products to blank (nightmare).
I am now manually updating the size attribute for each instance where it is blank. However, I am finding that an hour later the size will be changed back to blank again and other products that did have a size are now blank
Any experience with this issue and help fixing it would be greatly appreciated!
For example AJF-W15106-VINTWASH-8 should have size 8 in the size attribute column