If you use VstSynthFont as default you can set that midi channel to use the Pianoteq VSTi and save that as default.
When loading a MidiSuperiorTrack you can save the Pianoteq group to
Hi-Q 001 01 Piano, Acoustic, Grand Sforzando.tgs (just make backup copy first) you can save all the Hi-Q to Pianoteq presets.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
BB22-VstSynthFont-VST-Channel.png (125.59 KB, 41 downloads)
BB22-tgs.png (10.93 KB, 40 downloads)
BB22-Save-Group.png (137.86 KB, 40 downloads)
BB22-Load-Default.png (85.6 KB, 38 downloads)