Batch Number Window - Reverse Auto select (Mass Deselect)

I've attempted to create a line loop to run through the batch/serial number screens to move all the batches allocated to the products on a sales order back to the available Batches side.

The Line Loop successfully runs through the 'Rows from Document' window, but for some reason is doesn't want to run through the 'Selected Batches' window nor clicks the [ < ] button ($[$47.0.0]). I've tried using the Click and Focus options with a macro, but it doesn't actually click the [ < ] button.

Any suggestions?