Problem creating morph on pleated skirt

Trying to learn content creation I'm up to rigging and creating morphs. I've followed Sickleyield's tutorials, which are amazing by the way. I created a pleated skirt for Genesis 8 Female and managed to create a morph for the Left thigh side which worked perfectly. Used the same process to create a Right thigh side but the skirt doesn't return to zero when the side to side slider is moved back to zero. See images below. This is my process.
1. Create the posed skirt in marvelous designer.
2. Import into Daz as morph target.
3. Open Property Hierachy
4. Highlight side-side in skirt right thigh bend and move across to 1st stage controller in the property hierarchy.
Haven't saved this morph as it's not working properly. The first one, that is left thigh side is saved and working as it should.
Am I missing something.










Comments
Is the side-to-side actually zero at the end?
Yes side to side is at Zero. Very new to this so really don't know where to start in trying to fix this. I'v followed several different turorials but always end up with the same result.
Does the bulge appear if you undo (Edit>Undo, or ctrl-z) the side-to-side rather than setting its value to 0?
Thank you for your reply Richard. I have managed to create the morph. I was doing steps that wern't needed. Now trying to create a morph for particular kneeling pose. Manage to create and save the morph. When I reload the skirt and turn the Kneeling morph slider up the skirt just falls off of the figure. Is there a tutorial somewhere that deals with creating and saving morphs for certain poses.
Should be like any other morph, tbh. Maybe you've got a rigging issue?
Well I've got a little tutorial "here" with pose simulations being the targeted morph poses to make. The trick is to keep the figure in the pose and along with the clothing send it over to the modeler to be morphed. Back in D/S select the clothing. In the modeler [i.e. Hexagon] morph the clothing and send it back to D/S to make the morph reversing deformations.