What kind of function has the reg key [HKEY_USERS\.DEFAULT\Printers\ConvertUserDevModesCount] ?

Hello,

do somebody know what function has the key
[HKEY_USERS\.DEFAULT\Printers\ConvertUserDevModesCount] ?
In some clients we found there thousands of entries like
"\\\\CSR|PRINTSERVERNAME\\{370E422B-36F9-4EDF-92A3-BED9E3E0262F}"=dword:00000001
A normal user profile sometimes has also thousands of entries in this key.
What does this entries in the windows system? I haven't found anything relevant on the net.

Can we delete this key without a problem?

Maybe someone can help.

Thanks in advance.

Best regards

Bernd