Hi Marcelo. I believe these 3 KB articles will help you to restore your ST to a new server:
https://portal.smartertools.com/kb/a2581/move-smartertrack-to-a-different-server.aspx
http://portal.smartertools.com/kb/a2573/installing-smartertrack-on-a-dedicated-server.aspx
http://portal.smartertools.com/kb/a2574/installing-smartertrack-on-a-shared-server.aspx
Please let me know if you have any questions. Thanks.