Bc2000 (for the BCF2000 & BCR2000)

Hi-

When I power up the BCR all rotary settings are at 0, as expected, so
the first time I use one to control, say, a volume fader in my DAW, it
jumps to 0, then follows the rotary.

I thought maybe I could avoid this by using Relative rather than
Absolute mode, but maybe not, or I'm doing it wrong. REAPER, for
example, has Absolute and 3 Relative modes to choose from, but none of
the combinations of BCR/REAPER settings I've tried work. The control
will just move slightly and erratically, sometimes in the opposite
direction of the encoder.

I know I can use the Exit button to disable the encoder temporarily
while I match the values, but should I be able to use Relative mode
instead? And if not, can someone explain what this mode is used for?

TIA!

-Susan