Issue with Cue PLaylist and two different sequences linked to :(

Hello, i prepared two sequences different with the same sound written in two programs differents.
When i want to go to the second one with the Playlist Cue fonction, one step is missing (the 3rd). As a result, my second sequence is not right on time any more. After a first cycle, the second cycle of the sequence is ok., the 3rd step appeared.. ??really hope that this issue will be solved with a future OS. thanks a lot.