PGPSTAMP difference

Hi guys,

Why a two clients enrolled (PGP Desktop 10.3.2) PGPSTAMP one looks like this:

ovid=keys.mypgpun.com&mail=*&group=b659cfb8-7f66-42d9-91a4-4c143b2cf72f&admin=1

and in another way:

ovid=keys.mypgpun.com&mail=*&admin=1

What problems could I have with one or another ..?

NOTE: The string b659cfb8-7f66-42d9-91a4-4c143b2cf72f I can see it in the XML Preferences editor of consumer policy DEFAULT in the Uiversal Server (3.3.2)

<key>keyManagementMode</key>

<integer>0</integer>

<key>detectSmartCardForKeyGeneration</key>

<false/>

<key>smartCardKeyStorage</key>

<integer>1</integer>

<key>prefSetUUID</key>

<string>b659cfb8-7f66-42d9-91a4-4c143b2cf72f</string>

<key>prefSetName</key>

<string>Default</string>

Thanks.