I see what the problem is now. I have 2 file servers that has File Archiver Agents.
The first server that I was asking about, has 2 Sets under 'Local Migration Instance':
DataClassSet - There is no Filters tab in the properties.
DefaultArchiveSet - The subclients have the Filters tab and I can make the changes to use the global filters.
Now this presents another question...
There are several active subclients under DataClassSet, with a history going back to the initial migration until now.
There are identical subclients under the DefaultArchiveSet, that have a couple jobs at the initial migration, but are not active.
So, is there a difference between having the subclients created under the DataClassSet vs the DefaultArchiveSet that impacts the outcome of our Archived files?