Cutting out footage on Wedding

I have some wedding footage that has ceremony and mass included. I have to cut out the mass, because client only wants the ceremony. I have 2 tracks of video/audio, and have already used Excalibur Multicam feature and assigned all the camera switches. My question is, to get that 20 min. of footage removed, do I "Select All" and do splits and remove, or do I render to mpeg2, bring back into Vegas and do my splits then? I tried the first option (select all/split) and it seemed to have scattered the files, and removed the tally track & master track. Unless I did something wrong.