All the record-enabled devices begin recording data, using the current time as a start time for the recording.
Once the duration is met, the recording stops and advances to the review phase. At this point, the data is not yet part of your Maya animation and is not saved to a Maya file.
Data that you can preview or convert into animation curves is called a take.
Review takes you to the review mode, the same as if the duration expired.
Rehearse doesn’t bring the device data into Maya.
If you accidentally chose Rehearse and want to see the motion in your scene, click the Preview or Apply Take buttons. Click Preview to create a preview version of the take; click Apply Take to make an animation curve version of the take.
With this method, each device automatically saves unique files for each take and you don’t have to manually change the take number and take names.