Batch printing of sheets leveraging Map Manager

I've been struggeling trying to find a way to batch print a bunch of sheet models that either have a Map Definition themselves or reference a Map Model.

Print Organizer seems to ignore Map Manager's thematic classes completely.

The print key-in does apply the thematic classes, and I thought this was the way to go, when combined with some custom development. Unfortunately, this wasn't the case. Since the key-in processes the active model, the loop has to first activate the model and then call the print key-in. What happens then is that the sheet model is activated, but the print key-in is somehow fired before Map Manager performs rendering of the thematic classes,

The only way through that I've found is using Batch Processing in conjunction with the print key-in. This creates the desired output, but it's very slow and very unstable when working with real data.

Am I missing something? Preferably some toggle in Print Organizer to enable Map Manager resymbolization as this would be the preferred way to accomplish my task.