Net Use mapped drive permissions issue

I am using "net use" to temporarily map a drive.  The mapping works correctly and the drive can be accessed, however in trying to create a new folder on the mapped drive I receive an "Access Denied" error.

This is what I get when I check the permissions on the drive.  I am using the bk250233 account to map the drive and as shown I have Full Control permissions.

PS C:\> get-acl I:\ | FL -Force


Path   : Microsoft.PowerShell.Core\FileSystem::I:\
Owner  : GSC-IMAGESERVER\jg250490
Group  : GSC-IMAGESERVER\None
Access : Everyone Allow  FullControl
         NT AUTHORITY\SYSTEM Allow  FullControl
         BUILTIN\Administrators Allow  FullControl
         GSC-IMAGESERVER\bk250233 Allow  FullControl
Audit  : 
Sddl   : O:S-1-5-21-1839195245-72011158-932539431-1008G:S-1-5-21-1839195245-72011158-932539431-513D:PAI(A;OICI;FA;;;WD)(A;OICI;FA;;;SY)(A;OICI;FA;;;BA)(A;OICI;FA;;;S-1-5-21-1839195245-72011158-932539431-1013)