tyCache not loading correctly into Birth Flow, ignoring "new particles only"

[Alexx31]

I tried today many hours to find out, unsuccessfully:

I can import into a "tyFlow with Birth Flow"  some other events as known and expected.
But not a certain event.... 
Used exactly same settings for export and import. tyCache looks always right, but imported tyCache is completely weird (only with this flow and a second one).


Comparison between tyCache and imported tyCache in Birth Flow: Birth Flow lets many particles float around and does not keep them "deleted".