Blueprint B is a child of Blueprint A.
A has replicated event.
B handles the event in its graph
When compiling B, get error:
Event event name function’s net flags don’t match parent function’s flags.
Also, changing the replication settings of the event in A while it’s in the graph of B causes the editor to crash.
Hello,
Thank you for your report. We were not able to investigate this on the engine version you reported, but there have been many version changes to UE4 since this question was first posted. With a new version of the Engine comes new fixes and it is possible that this issue has changed or may no longer occur. Due to timetable of when this issue was first posted, we are marking this post as resolved for tracking purposes.
If you are still experiencing the issue you reported in the current engine version, then please respond to this message with additional information and we will investigate as soon as possible. If you are experiencing a similar, but different issue at this time, please submit a new report for it.
Thank you.
I am still getting the same thing in UE 4.6
It takes less than 45 seconds to make a project and test it. “Answers” like this just seem lazy imo and don’t help to make a better product 
Still crashes the editor if you change the parent class function’s replication.
Hello Voren,
I was able to reproduce your issue in 4.6. however, this issue has been fixed internally and in 4.7. Thank you for your time and information.
Make it a great day