question on editing multiple transactions

[Jack Ostroff]

Is there any way to remove the memo from multiple transactions in a  
single edit, even if the memos are all identical?

This is with a version recently compiled from master.  If I select  
multiple (even just two) transactions, all identical except for date,  
the transaction editor opens - but ALL fields are shown blank.  I know  
if any field differes across the selected transactions, it shows blank  
in the editor, but by showing the memo as blank, there is no way to  
change it TO blank, or even a single space.

Is there a bug here, or just not an available option?

Thanks.

Jack