Before you install 5.0.1 or migrate from 5.0 please test the new version on a test system to make sure nothing breaks. Always take a backup of database before installing on a production system. If you are upgrading from 5.0 to 5.0.1 please be aware that the following resources will be reloaded.

Administrator role
Manager role
Employee role
Ticket.Buttons
Printer.Ticket
Ticket.Close
Cash.Close
If you have customized any of these resources please take a backup of your originals and reload them after the migration has run.