I have a biped in scene, than I have a dummy object link-constrained to Bip's root (little diamond), dummy object is not a child of Bip's root. Now I may independently from Biped animate the dummy object.
At some frame, I want to save dummies offset in position and rotation against Biped's root (biped root - dummy), later in different frame when Bip's and dummies position/rotation has changed, i want to load the offset from the previous save. I'm doing the save and load to ini file, because I want to save and load the offset between different max files or 2 running 3dsmax instances with their own maxfile open.
I got the save and load to .ini work, but I have big troubles with position and rotation offset. My dummy objects jumps to weird locations, sometimes when i comment out the rotation part, position works, sometimes even position doesn't work. I have read all those threads about transform matrix, but I'm unable to make something good out of it :(