Fit to Improvisation question

Hi,
 
I've used the Fit to Improvisation feature many times over the years, and suddenly come across a problem that I don't how best to approach. On this occasion I've recorded a song with a singer, so my piano part was recorded as MIDI while she is of course audio.
 
Minor issue 1: would it be best to do Fit to Improv on a separate MIDI only version, then import the audio again onto that, or does Fit to Improv work fine while the audio is present in the file? I can experiment with this, but thought someone might know.
 
Main issue 2: In the midst of the track, and completely unintentionally we used a 7/8 bar instead of 4/4. It sounds perfectly natural (even more of a surprise!) and neither of us noticed it until much later. It means that when inserting the metronome part, if keeping a steady beat you're suddenly hitting on all the off-beats from there to the end of the song. So far I have placed the metronome steadily through the bar, then hit on the beginning of the next bar, and I know that the Fit to Improv will interpret this as a 4th beat that is 2x faster than the rest of the bar:
 

 
Ultimately I want to have the 7/8 bar inserted correctly, but would this best be done by working on the MIDI for Fit To Improvisation (as Minor issue 1), then importing the audio?
 
Thanks in advance
 
ReTracer
 

Hi Brundlefly, thanks for this response and apologies it's taken me a while to get back. I haven't come across Set Measure/Beat At Now so far, and will find out if my current version has it (I'm using 8.5 on this machine, have got X3 on another computer - and haven't upgraded to Platinum yet. Thanks for the pointers, that's really helpful!
 
Edit: thanks so much - I've never seen this Set Measure/Beat At Now feature before! Brilliant!
 
 

Hi Brundlefly, well, I thought it wasn't working well, in the end I fell back on Fit to Improv, inserted the 7/8 bar, halved the tempo for that last (originally quarter note) beat, then slide the data 480 ticks from the right of that, to the left. It all worked OK! A slight drift in the audio which was fixed manually by a subtle tempo change in two places.
 
I've been enjoying reading your posts - I'll look forward to trying out set at beat/measure another time!
 
In the meantime I have another question about exporting tempo changes as a text file, I don't think it can be done, but I'll post it in a new thread.
 
Cheers,

Set Measure/Beat just alters tempos to fit the timeline to existing audio and/or MIDI; it shouldn't alter playback sync or otherwise affect existing material in any way. But since  the musical M:B:T timeline is the fixed visual scale in SONAR, clips may appear to change position and length, and the waveforms in audio clips get redrawn.  In some cases, this redrawing can make audio waveforms disappear when zoomed out, but the clips themselves should not disappear. And the disappearing waveform thing usually only happens when you have a lot of tempo changes very close together, like 16ths.
 
If that's not what you're seeing,  I might need to see some screenshots or a sample project before an after.