Feedback provided by participants of the User Acceptance testing for MARC instance notes:

• “Since Subfield is required I thought remove all would remove all of that particular subfield, not the whole field since under Find there is the option to remove subfield or field.”

• “It took a bit of working out. It seems like you have to input a value in the Subfield box before you can Remove all (the whole field); I don't know why you would need to do that. And it seems like you can only remove a subfield by first inputting the exact data in that subfield; again, why does one have to do that? Why can't you choose to just delete the subfield, regardless of the data in it?”