I was working with BRAY that has all 30 bits turned on and FILT(VBSHIFT) annihilates it instead of shifting it; FILT(VRSHIFT) does still shift it though.
To turn on all bits, I set the FILT(SET) to -1 and the shifting FILT to 2; the shifting FILT only shifted the BRAY while in VRSHIFT mode; in VBSHIFT mode, it annihilated the BRAY instead.