Pretty much with what Mei and others have said.
It happened - Zakul, Alliance and Iokath. But the details are vague when and where they need to be. All sides v. the Empire are viewed as more hostile (as most sides and the Empire that are not Imperial are...lol) - we've never stopped being in a hot/cold war of some type with the Republic.
The Alliance is a "faction" for Karmic that she's interested in being more on friendly terms with (for the purposes of legal and illegal trade
) no matter what the Empire's stance due to her own interests (owning a large mining corporation with several camps on several planets in the Outer Rim; one of them home to a tradingpost).
She's been Icily on several missions to Iokath so, yes that exists too - everyone's out for the ooberweapon.
Icily Karmic spent the Zakul years more out on the Rim protecting her own ass/ets than anything else so I didn't have to figure out what else she would be doing inside the defeated Empire/under Zakul more directly. Towards the end of the Occupation she joined up with the "coalition" (the IC name for our player cross-faction version of an alliance against zakul) to help defeat Zakul. When things got back to normal, so did she - and so she picked back more in the Empire more or less where she left off; as a top level assassin and Darth reserved for high risk threats to the Empire from within/without (the roll of my defunct guild before it went defunct pre-zak) - and still CEO of her own Outer Rim corporation.
Makes it easier to be vague about her whereabouts during those years and more adaptable/malleable to people who are RPing around me and what roll she needs to take.
Because ultimately my character's truth about the events/current status of the galaxy is dependent on who is RPing around me at the time. If I was Rping with one of Squigg's characters and it never happened - then Karmic wouldn't be bringing it up and it can stay never happening. If I'm Rping with a group of Alliance members, then she's more middle-ground friendly and if they say Acina is dead, alive, or a rockstar on tour - then I'm good with that. *shrugs*
It isn't important to her character that I be more specific with who's dead, who's not, etc. So I don't worry about it unless its important for the current RP plot going on.
I've been in this state of "we're all just trying to bolster our forces/gather resources/recover what we lost without losing too much more" in Karmic's head since the fall of Zakul and she's still there.
I think a good portion of our Rpers in this community are probably much the same - unless its a particular fact/person important to that particular character (for whatever reason) or the particular plot they are in - we tend to avoid imposing any specifics on anyone else because it *is* so officially unclear.
I think it would really only arise as a problem between characters/individuals if you've got multiple people in an RP group and none of them are willing to "handwave" the particulars they disagree on for the sake of the RP. I don't see that happening very often (if ever) around here.
Of course the only way to avoid the above issue is to discuss this OOCily with those other people if you were talking and realized your characters have two entirely different head canon truths. I'm sure most of the time something can be worked out that is fine for everyone.