I just discover that the wrong rigs may be selected when you edit the fields:
I imported a number of rigs (set A) in RM from my HD. After the operation, they were all selected. I went to the Inspector column and edited the Comment field. The edit correctly applied to all the rigs of the set.
Then I imported other rigs (set B) in the same way. They were all selected.
I then went to the Inspector column in order to add a comment to all of the newly-imported rigs and realized - just one second before pasting the text - that the Inspector's content had not changed in order to reflect the new selection: the tags related to set A were still shown instead.
EDIT: When I tried to add the Comment column to the main window, the app reported an issue with the option to close or to ignore the error. I chose Ignore and retried adding the Comment column. I succeeded, but nothing of what I had added in the Inspector was there.
Now I don't know if the comment have ever been written.
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