Purview EXPORTS unreliable and missing "Top-of-information-store" folder

Has anyone noticed an issue where the exported PST files are either empty or missing folders?  I don't normally check every PST file that I export, but after hearing from customers that there are either no emails or missing folders, I started to check after each export.

I am noticing that the Seach and Export process seems to be fine and the Downloaded PST file show the correct size, but when i open the PST files, I'm seeing that they contain no emails OR they are missing folders - including the "Top-of-information-store" folder.  When i look at the Properties > Folder Size settings, i can see that the PST file thinks that all the folders are there.

This is incredibly tough to work with since I am now checking each PST file and then having to rerun the search/export/download all over again.  It's been like this for about 3 weeks.