If you update your WinPOS application from the Traditional look to the new application and are on mysql 5.0, please be aware of the following.
The following known issue:
WinPOS backup feature fails (mysql does not support this feature)
Solution:
Backup your POS's on CAS to your dropbox or sftp site, so that you have your data in case of a natural disaster
https://retailcloud.atlassian.net/wiki/display/user/Backup+Settings