Bank transaction disappeared after editing journal

Yes the journal was created from the banking transaction I tagged as being salary.

I’m not sure what you mean by “If so, there’s likely to be a line there which is what created the bank transaction in the first place. If you remove this, it will remove the bank transaction.” - the entries on the banking page are from an imported .qif file. I tagged them as salary, then edited the journal (which made them disappear). - The journal didn’t create the banking transaction.

I’m changing the journal to look more like the example in here:

i.e. adding lines for gross wages, PAYE, NI etc, and removing the existing lines (because the automatically created journal entry added the amount as Net wages, but they’re gross wages).