Way to undo a model object that's been dropped

I have some delete functionality that does a row.drop on a model object in a grid. I also have the ability to add and edit items in a grid, so I'm doing it all in a batch. I have a save and a revert button to either commit or reject changes in the batch.

Is there anyway to revert a dropped model object?

I have also tried store.rejectChanges but that is causing a script error in trying to add that item back into the grid which I am trying to reproduce.

Thanks

Way to undo a model object that's been dropped