This isn't relevant to the problems that we have experienced.

In our situation, most or all of the files in the Lacerte\19Tax folder on our server disappear.  The folder is completely or partially emptied.  All of the client data is missing.

So far, we have had to have our outside IT people go into the backups and restore the files.  I have also taken the approach of backing up the data files in a separate folder (it can't be in the 19Tax folder since those files disappear.

This problem seems to be more prevalent when there are program updates.