InfoPath Dev

 If the user changes a field in any of the drop down columns each will be inserted/updated into the main data source repeating table.  If the user changes any of the fields back to it's original state (all columns are the same as they were when search results were first returned) that row needs to be deleted.  I'm going to email the form to you.  It's 594K which is a little too large to attach to this post.

 Great - can you also include info on what error you are getting when you try Insert or Delete after your initial delete? Your doc says:

...the insert command and the delete command no longer works.

But I'm guessing you may be getting an error in the Qdabra Rules error node?

 I put the error field on the form and I didn't get any errors.

Individually the rule works on each column, but once I start clicking on other columns then the behavior gets wacky.  I've tried changing the order of the rules, but no luck.

I'm adding a sample that has a button that does what you want. Check it out.

See the "X" button to the right of each row.

 Thank for responding.  Hilary worked with me on this and I finally got it figured out.  It's working great.  We've tested it many many times and couldn't break it.