Pegasus Mail & Mercury

Hallo, I urgently beg your help. My Pegasus Mail Version 4.41 was running imperfect, it was not possible to ''re-indicate'' a folder, ''pipelining'' occurred when sending mails. I therefore uninstalled and reinstalled Pegasus Mail. Now my 'old' folders and mails are no more visible, the *.PMM und *.PMI files are still ...