I dont do a lot of posing with pose dials, so my memory is sketchy on the issue. I think Poser treats them like morph dials, so in order to get them to save with a pose you might need to check the 'include morph channels' option on the save dialog box. But that will also include any morphs that you have on the figure that are set to greater than 0, or it could also cause problems with applying the saved pose to a morphed figure, as it would set all the morphs to whatever is included in the pose file. So you'll have to do some testing with that.

To set up ERC controls you need one of the pro versions, or you have to edit the cr2 manually. Poser Pro includes the ability to create master parameter dials so you can create dependencies from inside poser to control joints, morphs, scales, most anything you want it to control.