Something to look out for, that I discovered last night:

• The 000TB DynaVerb Program contains the base parameter settings as intended.
• When I loaded up the 000 DynaVerb Preset (saved as above), all of the parameters were reset CCW.
• I believe that the 000 UltraTap Preset may also reset (at least) the MIX to 0.
• There may / may not be a few others, that – at the time – I chalked up as an errant adjustment.

The workaround for now would be to build around these few Programs, or be mindful of the behavior with these two Presets.