Numnbers loses photo thumnails and cannot recover
Hello. I use Numbers to manage a relatively small inventory of c.400 items with thumbnail pics of the items. I move a pic from iphotos directly into Numbers to do this. Now and then, I use 'reduce file size' to manage the file size, which Numbers has done very well. Until about 48hrs ago, when I ran a reduce file size function and on checking later, the pictures disappeared and were replaced with a colour fill which varied by line item. I checked back via 'load recent versions' and the same thing has happened to previous versions.
Can anyone help me understand the issue? I have not moved any photo file locations. It was all working fine until the last 'reduce file size' operation and it seems strange that previous versions cannot recover the photos. Running an M3 Pro with 32GB. Pic attached.
Thanks