Going by what we've seen in stills, here's what was (regular text) and probably wasn't (in bold) shot:
- Spock exiting the Enterprise, making his first report
- On the bridge, Kirk learns Spock has left
- Spock concentrates, then jets himself down to the trench (model/miniature work to be provided by Robert Abel)
- Kirk argues with McCoy in the airlock
- Kirk exits the Enterprise
- The original longer 'Ilia at the mirror' scene goes here
- Kirk follows Spock down to the trench (model/miniature work to be provided by Robert Abel)
- Kirk attacked by 'sensor swarm' (using wire footage shot in reverse)
- On the bridge, Sulu, Chekov and Uhura beg Spock to help Kirk
- Spock shoots the sensors off Kirk, the two have it out
- Kirk and Spock fly to the inner wall, watch the sensors fly in
- Spock catches a sensor, lets it go
- Kirk and Spock follow the sensors inside
- Kirk and Spock enter the Memory Wall chamber, fly to the newest memory crystals
- Spock tries to mind-meld with a 'Meditator Ball,' with predictable results