cubase 7 beat designer question

Question…I created a beat in beat designer…tranport it into the arrange track…I closed beat designer…now later on I want to add another beat to it…I cant seem to reopen beat designer or to that matter find it again in the chain…how can reuse beat designer and groove agent…I dont want to create another instance of Groove agent…is there something I am missing?

Once you have frozen the beat down to a MIDI part, you should be free to resume in the instance you already had up under MIDI Inserts>Beat Designer.