no, preview and edit before merging can be done on 7k, there may be something else not mentioned in your setup.
try this;

Initialise.
Record & edit, track assign, preset, technics multi recording, ok.
Exit, exit, record & edit, realtime record, track 6, record and stop.
Then exit, exit, copy and paste, track copy, 6 to 11, ok.
Exit, exit, record & edit, realtime record, track 11, go to mixer track 11, start, adjust, stop recording.

now it will play back with all your volume changes, if you go to step record they are all on track 11, not on track 6, and can be edited there before merging.