Hi Rajesh,
If you enable the HPF filter (hpf_out = 1), the acceleration data in registers 0x01 - 0x06 will be high-pass filtered, but the embedded motion detection function still processes standard non-HPF data including the static acceleration. So you can still use the motion detection function to detect slow motion/tilt and the transient detection function to detect dynamic motion.
I hope it clarifies your question.
Best regards,
Tomas