This is how I do it.

1. Make sure all dials are the way you want them. 

2. Use the free Spawn FBM script (available on this site) to consolidate all those dials into one Full Body Morph. All the dials except the new FBM will be zeroed. Or you can use the Generate Full Body Morph menu command in Poser. But with the free script you can limit the new morph dial to Body and certain parts, rather than Body and every part with Poser's command.

(Note) the new FBM will include the head morph if those aren't zeroed beforehand, though the free script has a checkbox allowing you to exclude expressions (not face-shaping morphs).

If all you want is a single dial instead of a bunch of changed dials in the current figure, you can stop here. But you won't be able to use this FBM in another figure.

3. Remove all morphs EXCEPT your new FBM and an empty PBMCC channel, for example PBMCC_50. Make sure it's a channel that won't conflict with any channels in the figure who will get this FBM. Brand new V4 and M4 figures don't have anything occupying the PBMCC channels, but characters such as Alice 4 and GND4 use up a few of them.

This is a very tedious process to do one morph at a time, and besides, Poser doesn't let you delete Full Body morphs manually, only partial body morphs. There are several free scripts that let you delete morphs en masse, including Body ones. I prefer the one in Pocketknife (not free) because with one click you can select all morphs to delete and then UNselect your desired FBM plus a PBMCC channel.

4. When the only morphs remaining are your FBM and the PBMCC channel, make sure the FBM is set to 1. Then use the Spawn Char script (free on this site, referred to above as P6-something) to generate an injection pose. It will also create a Remove pose (but no thumbnails). Name the injection, and specify the channel. There should only be the one channel available in the drop-down box. Choose the location to save the pose (it must be somewhere in the Pose folder or its subfolders). Choose "Set FBM to 1" since this is a full body morph and you don't want every body part set individually to 1. Now click GENERATE (not OK, which is more intuitive but will just close the window without doing anything).

5. Let it churn away, it will take a few moments, then if successful you'll get a DONE message. Now you've got a pretty much useless figure with only one morph in your scene, but your Injection pose is saved to the computer. 
    

6. Now you can load another figure (of the same type, not a different generation) and inject your new FBM like a pose. It creates a morph dial in the Body and all affected parts.

The reason why we deleted all but the new FBM and one PBMCC channel before was so that the injection pose will not overwrite any other dials that may be set in the receiving figure. All it's doing is injecting the FBM into Channel 50 or whatever. If you didn't delete the other morphs, every dial in the receiving figure would be set to zero or whatever the first figure was set at. You may not want that. Simpler the better, I say. Just inject the new FBM, nothing else.

In this way you can have a single figure with as many different character dials as you want. This is how V4 has all those body shapes installed (Amazon, Voluptuous, etc.) Just keep the PBMCC channels straight, write them down so you don't wipe them out with a new injection. If you don't want an FBM any more in that figure, use the REM pose to get rid of it. You can always use the INJ pose to put it back.

Now, if somebody could just write a script to do all this automatically!