I’m not sure, but I imagine you will want to know the update on a problem I had for quite some time and which did not get resolved.
That original thread expired, but it’s here:
Preview Mode Isn’t Working On Some Listings
I had accumulated 27 of these and put them in a folder for “later fixing.”
Today I got around to it, and thought I’d try exporting to see if the sizes were all as big as they were before, and to my shock and pleasure, when I tried to open the new exported file, that copy, in each instance, was fine!!
I hope that made sense.
Anyway, I’m not sure why, but I can now “fix” the problem if/when it occurs again.