Hi Pavel,

have you looked into 

  cm_set_transition_sequence()

which let's you define the sequence number for every midas client. You give any number between 1 and 1000 (default is 500 for frontends I believe).

The default value of 500 is defined in mfe.cxx:2641 where you have 500 for all four transitions, but it can be overwritten in the frontend_init function via 
cm_set_transition_sequence(). Since you have separate values for the start and stop transition, you can get the different sequencing for both transitions as you need. Like set 
all type A to 400, type B to 600 for TR_START, and set type A to 600 and type B to 400 for TR_STOP.

Since this works on the midas client level, it should also work for the tmfe.cxx framework. I'm however not sure if you have a similar default of 500 as in mfe.cxx:2641. But K.O. 
should know.

Best,
Stefan