Recently, after updating to 117 Pre3, I discovered that the Item Back colors which I had used to mark numerous items in my main IQ base had disappeared, and all these items were now left with no item back colors!

 

I accordingly opened an earlier IQ base, which had been saved - and left untouched - before pre3 was released. Here all of the colors were preserved, but not too long afterwards when I opened this IQ base again, the colors disappeared!

 

When I reverted to the 117 pre2 version colors from an earlier IQ base were preserved, although this did NOT let me restore the colors in the IQ base where they had been lost.

 

Your help would be most appreciated!