[Users] Rebuilding folder tree

[Rand Pritelrohm]

Hello,

Pardon me if the subject has already been treated but I can't find any
trace.
I am a bit confused about the "Rebuild folder tree" function despite
having read the documentation.

I use CM with POP3 accounts exclusively.

So my questions are:

1. As a normal and regular maintenance (backups, filters, distributions
   in folders etc.) do I have to call the "Rebuild folder tree"
   function?
2. If I call this function will I loose all marks on certain messages I
   put on?

Thanks by advance for the responses.

Regards,
Rand