[p4] Codeline comparison question

[Tomasz Pado]

Hello All,

I have what should be a simple question: how do I compare two codelines and
come up with a list of changelist #s that have gone into one codeline but
did not make it into the other? For example: let's say I have in the past
branched main into 1.0. Over time, there were changes going into both. All
changes that went into 1.0 should have also been checked into main but not
vice versa. How do I make sure that was the case?

Thanks,
tomasz.