OpenMaya: "Static Curve Removal" option sets constant channels of animations to 0

What steps will reproduce the problem?
1. Open Maya, create a scene with an object with non-zero Y position
2. Put some animation keys for that object at different frame numbers, by only 
translating it over X and Z axes
3. Export with "Static Curve Removal" option on

What is the expected output? What do you see instead?
Channel Y of the animation is set to 0 for each exported key, which is 
incorrect.

What version of the product are you using? On what operating system?
OpenCOLLADA Maya 1.3.0, RC1
Maya 2011 x64 Hotfix 3 on Windows 7 x64 Professional (EN)

Please provide any additional information below.
Proposed solutions:
- Write the true value of a constant channel, even if it's constant, when the 
two other components are non-constant (preferred solution)
- Change the <channel> tag of exported animation so that it binds only the X 
and Z channels (supported by the specs but some importers may not like it)
- Export two separate animations for X and Z (works but creates larger files)

Original issue reported on code.google.com by sebastie...@gmail.com on 9 Aug 2010 at 3:30

SahelFllh / opencollada

OpenMaya: "Static Curve Removal" option sets constant channels of animations to 0 #99