Al:
I found 'Default Volume' in Kontakt, either -6 or 0 but I didn't find 'Use standard CC#7 for volume' - at least not under Options.
Thanks..barlowjam simply quoted from a somewhat related reply but not exactly (a thread about RA..Kompakt engine there)
so, that #7 and #10 setting for volume/pan is only in Kompakt ..
Infinite added - "Accept standard controllers for Volume and Pan" for each KONTAKT instrument. (In Kontakt 2: Wrench button > Instrument Options > Controller > Accept standard controllers for Volume and Pan check box << UNCHECK)"
The "Accept standard..." option is just another name for the same thing. I actually meant setting it to ON and try to control the volume with an event from Sonar (event list or MIDI volume of the track)
Well , turning it off is one "solution" but I actually prefer having synths to DO respond to volume changes

turning it off as a workaround would maybe work.. but it shouldn't jump anywhere in the first place , we've seen such threads before and most of the suggestions are always the same..simply don't work in the NI case.
There are also small behavior differences between the VST and DX versions that you should check.