Things to check
while exporting geocaches from houdini to maya
Copy the original paths from the imported geometry from maya
Check the path attribute to export groups from paths
Check the motionblur maya arnold
it will require a velocity attribute on point level "velocityPV"
EXPORTING FLUID GEOCACHE To Maya Arnold
Really not proper way,But very easy and works well
1 . Before exporting abc- Promote "v" point attribute to "Cd" vertex attribute in houdini
2 . Import .abc in Maya select the cache and goto Arnold>motion vector source and enter "Cd"
3 . Reduce the motionblur scale to compensate maya houdini scale difference.
After long RND and connecting nodes like arrayToPoints and creating color set I found this as a quickest and easiest way of getting proper motionblur.