Hi Petra,
If it's showing READ FROM EM, that means the event didn't propagated to TM document. When you post event in EM, it has to successfully execute the ruleset method TM_MAINTAIN_EXEC_INF for your events. If TM_MAINTAIN_EXEC_INF is successful then the status should show propagated and your document status also should change accordingly.
Check your events and see if the location on the event is OK. Since most of the time, the reasons for events not being propagated to TM from EM is the issue with the event location.
Debug the rule TM_MAINTAIN_EXEC_INF and see what the issue is.
Thanks,
Vishnu