The Project Archiver does not seem to work properly. Not only does it not cut unused assets it seems to be adding assets that have not been attached to the current file. I downloaded the trial version of 2020 and this does the same thing.
I checked the assets using the Project Assets drop down, but the archive has picked up pictures, music and video clips that are not shown on the dropdown list.
Yes I will do that. I have an idea that might help get to the bottom of this. The files in Question were initally one large file that grew so big my PC was struggling to process. I broke it down to 5 smaller files. I did this by taking the original file and deleting the assets I did not want in that file. It seems that the software is still seeing the links to the deleted assets. That said the Archiver is supposed to delete all assets not used in the file.