Splitting the party - everybody's doing it

Suddenly I'm not running four games.  Now I'm running seven.

Since the Lost City party decided to split up, the Tombs II team have followed suit.

There are valid reasons for those choices, but I now find myself attempting to run consecutive combats for Lost City.  This morning I made a crucial error when I thought one party member was dealing with Trignotarb royalty when in fact he was supposed to be several miles away fighting a spider invasion.

So far I haven't stuffed up the Tombs II  group who are mercifully  not in combat right now.  They however, have upped the ante yet again by splitting themselves into three groups.  Again, they have valid reasons.

At this rate, multiple personality disorder may be beckoning.

If the Den of the Slave Takers party decide to follow the trend I'll really worry. Luckily Tombs I have no good reason to split that I can see, but I may be underestimating them.