Currently Being ModeratedOct 17, 2013 8:00 AM (in response to Brunettin)
Just creating proxy media does nothing to your project.
I suppose you also changed the preferences to use proxy media (Preferences->Playback, "Use proxy media"), otherwise you'd still be using the original or optimized media all the same.
All the edits you make are preserved, whether you work in proxy or not.
The usual workflow when you need proxy is simple:
1) create proxy media if you haven't already (as you did)
2) switch to proxy media in preferences (as I suppose you also did)
3) when finished, switch the preferences again ("Use origina/optimized media") so that the final export is done in full quality. (In the meantime you can of course export "draft" versions in proxy mode)
Note: if you switch proxy *before* creating proxy media for all the clips, you'll get the "offending" clips appearing in red with a yellow warning; if that happens, just create the proxy media after the fact and everything will be fine.