[rules-users] Ruleflow nog showing

Hi! As I was creating a new ruleflow, to fit as a subprocess in another ruleflow, I encountered the following problem: My ruleflow is build, and I checked the correctness with the "Check the ruleflow model" button. When I close Eclipse and reopen my project again, my whole ruleflow (except for the start node) is gone, the xml behind the .rf still exists, but the view is gone. Has anyone any clue what happened? Thx, Femke