Thanks for the research, Don. I passed it along to the client to test.
In my GL, with "Departments" highlighted, I can create a mask and the "OK" button works. But I cannot create a mask in the form 201:215, because only 6 characters are allowed, although I was able to do this before in my client's data.
I have the same options to "create" when one department is highlighted and "edit" or "Delete" when a departmental mask is highlighted.
When I create a mask with "201215" or "depart", it acts like a department and cannot be deleted.
I am using W2K and my client has XP Pro.
I am curious to know what operating system you use.