Synth VST ignores custom preset

Using an obscure 32bit plugin (JuceOPLVsti), so I'm not sure if this is a problem with its coding or if I'm missing something re: how bitbridge handles presets.
 
Using Sonar X3 x64, I can't seem to get my custom parameters in this VST instrument to "stick" between sessions. When I open the VST the dotted-line dropdown menu at the top lists a handful of hard-coded default presets. If I hold Shift when I open the plugin I can access and save custom presets from bitbridge's. But even if I save and load from this list, it doesn't use the custom settings, it just loads whatever hard-coded preset I had selected last before saving the custom preset. It also does this when I first open the project. I've tried playing with saved FXP and FXB files too, but there seems to be no way to keep my custom settings when I reload the project.
 
I have run into this problem on a few other synths and effects, though I can get most to remember settings just fine. If it is indeed a bug in the plugin, is there a work around? For example, a way to dump all of the current parameters to automation envelopes?