Update: i used the 173 ecu stock file, opened the file, all ignition tables are 0.
I filled the tables with values making sense and saved the file. I could work with the file, editing, switching, copying... i filled the 173 file with the data of a 153 file so all tables were filled with data... saved it complete...
... closed the application and reopened the file again and .... the tables were empty again, completly filled with 0 again!
so there is a bug killing data!