I know this kind of problem has been mentioned before, but I don't recall if there was any good solution or workaround.

Following scenario: I create a master dial in Poser and export it as an injection pose. When I load the injection pose into a fresh figure *and* create an empty master dial with the same name by hand, before or after loading, everything works as expected. But I can't figure out a way to get around that creating-by-hand step, which could get really tedious if I wanted to, say, create a dozen master dials and put them all in one file.

Currently using Poser 12.0.619 if that helps.

I'm not seeing what you are seeing. I'm actually a bit confused by your workflow. Nevertheless 

Usually I don't use Create New Master for the creation of blank masters for INJ destination, which I won't bother explaining but

Here's Maya's Ball Joint Doll

I create 3 blank masters in the body (they can be renamed, at any time, in a few ways, including one way that's contrary to what it says in the manual...)

I export via Pmd Injection file pz2

The resulting file does not call on a pmd, there's no morph data of course, it's empty valueParms

I load a new instance of BJD and apply the INJ pz2... the 3 empty masters appear in the figure as named. If I had created 20 blanks and passed them on it would be the same. Not sure why you are needing to recreate them manually and name? Is this for conformers?

Thanks! Seeing a scenario that works should help a lot with the debugging.

Ok

If you rename a master's internal name via settings you may sometimes encounter a gotcha where the name won't stick, reverting to it's previous name. Copy it again to an overwrite inject and it will stick. Don't ask me why, and it's been awhile since I've encountered it. Usually the rename works as expected and renames to the slaves dependency settings also.

Probably not worth mentioning.

Sorry for being so vague in my initial post. I'll do some experiments after work today to see where exactly I run into problems and share my results then.

You also might encounter not working dials via inj if they are transform, rotation, or scaling dials created via Create New Master. I use a different method for blank masters that works reliably, described here... it's tedious but alot of this is tedious process oriented stuff...

https://www.renderosity.com/forums/threads/2972121/0-rotations-dial

Sorry for being so vague in my initial post. I'll do some experiments after work today to see where exactly I run into problems and share my results then.

One final thing that directly addresses just the title of this thread...

Make sure that in the dials settings after creation that it's not checked as hidden.

It might also be worth it to have Show Hidden Parameters on...

Thinking about this it occurs to me that you might be trying to create a master in the head that carries over via pmd... You've been making expression morphs lately and probably Antonia has her old expression dials contained in the head. Things that carry over easily embedded in a cr2 file need different consideration if you want to utilize the time saving pmd injection that Poser now has.

I circumvent all those catches via always making masters, head stuff included, in the body. That probably wouldn't be desirable in your case for head morphs...

I think this is still relevant

Ah yes, I'd been wondering if my mistake was simply that I tried to create the master dial in the head instead of the body. The workaround via Spawn Morph Target sounds perfect. I hadn't realized that I could use the teaching tool for those, too.

Yeah, that worked like a charm. Phew! Thanks again, primorge!

You're welcome odf

Happy morphing

Maybe it will please you to hear that I am now in the process of turning Antonia's expression morphs into FBMs. Much easier to find morphs if they're all in the body, and if I decide to add subd detail later, I will need them to be FBMs anyway. Not to mention that valueParm injection problem, and who knows what else.

Wise choice.

Just create a new parm group category for head stuff. The custom parm group can be renamed and reparented (and nested) by dragging at any time, making moving large fields of dials easy. The custom parm groups also copy to inject...