Is there a standard location where coordinate systems are saved within ArcGIS when using a Citrix app? Or maybe a redirected folder location?
Not sure if this is the same for all cases of ArcGIS running on Citrix, but the location for the coordinate system/projection files is generally located at the following for a user on a network:
\[server name that Citrix is running on]\citrix redirected[user name]\AppData\Roaming\ESRI\Desktop10.2\ArcMap\Coordinate Systems
and similarly for custom transformation files: \[server name that Citrix is running on]\citrix redirected[user name]\AppData\Roaming\ESRI\Desktop10.2\ArcToolbox\CustomTransformations