Cutting your R11 shaft down to 44.00" from the normal 45.75" won't cause any changes in either kickpoint or flex stiffness. Also, please note that if you're ordering a R11 TP version, the finished length of the club is 45.25". That's because the shaft is 0.50" shorter (but trimmed) than the shafts in the 45.75" non-TP versions.
FYI, all premium shafts are designed to be butt trimmed to reach the desired length without affecting playability. This allows shafts to be used in either drivers or fairway woods. The only time that you may affect shaft stiffness or kickpoint is when you but trim a shaft over 4.00". Even then, flex and kickpoint changes would be minimal.
However, as others have stated in previous posts, you will reduce the swingweight of the club when you shorten the shaft's length. The good news is that you'll have the ability adjust that in the R11. You can get your swingweight back up to normal levels by adding heavier head and toe weights to the R11 head if you choose to do so.
Hope that helps.