Union when inbound transition has no records
Hi! I'm using an Union activity after Email delivery to join all profiles who received an email, continuing with an update activity to update a resource.

The issue here is that, if Union activity doesn't receive records from all inbound transitions it won't execute (it's like it keeps waiting for records from the empty inbound transition). And in my case, there're many times where I don't send specific emails (SMA_TEST3) and I want to use the Union for the others which sent emails (SMA_TEST1 and SMA_TEST2)
Is there any configuration to handle that? I want to use Union even if there're inbound transitions with no records.
Thanks.
