Loose import statement

Hi Webdynpro fans,

I´m trying to get through some webdynpro examples from sap (e.g. tutwd_flightlist_init and others). When it comes to place some programming extensions in the controllers (e.g. customController FlightListCust) for method wdDoInit() in the correct place (between @@begin wdDoInit and @@end), I have to organize the imports due to missing classes or packages. That´s working - so far so good. But when I "save all metadata" the imports will be deleted and the coding for the controllers is thrown away. I have updated to Nwds 18 but it has not helped. Does anybody know what to do?

Regards

Michael