I created my models, created several model groups, and then created my sequence. Then I decided I really needed a new model group. Went to Layout tab, created new model group, saved, and then went back to Sequencer tab. My new model group is not recognized and for the life of me, I can't find a way to "import" this new model group. The only way I can find/use it is to create a new sequence. When a new one is created, it recognizes that recently created model group.
Is it even possible to add a new model group to an existing sequence?