In short, yes. If you delete the PGO (Persisteng Group Object) files before unassigning licenses, you will lose that information, and you might need to license the server again. If you are using the SR1 of version 11, check the Events log file in the log folder, to see when the licenses have been assigned to what users. You can easily load this info into a QlikView app and do your own research.
I'd recommend you to take a look at the QlikView Power Tools that allow you to check server files, and download the latest version of the QlikView System Monitor, that can help you in this management tasks.
Hope that helps.
it means all the license information --> Server
--> Named User CALs
--> Document CALs
is gone when we delete the pgo files.The result is the pgo files has no information when we restart the server again it will be totally clean and then we should again license the server and assign Name User CALs and Document CALs manually.
Plus, we don't have to wait 24 hrs in case of Deleting all the CALs (DocCALs, NamedUserCALs) and re-assign them.
Not exactly. Server settings are not in PGO files, but in the .ini, .xml files in the different service folders (Distribution, Connectors, Web Server, etc).
.Shared and .Meta files store CAL information when using Document CALs in some cases (DMS), so these files need to be backed up as well.
Unless you have already done that successfully (and even in this case), I do not recommend to move these QlikView Server folders without having done previously the license unassignment and cleanup. If your case is a migration where you want to keep all users and settings, I'd suggest you to contact with your QlikView sales rep or Partner Manager so he can help you in the process to avoid hardcoding each license assignment and option again.
Hope that helps.