We have three citrix servers for this application, the mapping are done in a kix logonscript. On two of the servers we get the network drives mapped.
On the last on we don't (They are Loadbalanced) I've tested with the users and when the application is published on server 1 & 2 they got the driver mappings, on server 3 they don't.
It's Possible to reach the network share from server 3.
I can't find any differences in group policies.