undo previous/last batch

hi guys, 2 things related to undo function:

1/ deleting previous batches doesn't work for me. I select the date (e.g current) click ok and nothing happens. Any idea of how to fix this ?

2/ "undo previous batch" as well as "undo last bath" leads to the same action of loading the whole existing batch list. Can they be different in that way, one of them invokes really last batch only ?

thanks, rgds

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