[wolverine]

I am on Calibre 5.32. I noticed that a few books got updated to the most recent date.

I opened the folder for the book entry and the metadata.opf file has the most recent date. The epub and jpg date properties is the date that book was entered into Calibre.

I am certain that I did not update the metadata or opened the book in Calibre viewer today.

What would cause the metadata.opf file to get updated to most recent date?