Hi siawyuan,
if you ever need to change stickyness on again... you can use this script... "bent_stickyIK" by Nathan "bentllama" Walpole... -->
https://www.highend3d.com/maya/mel/?s...animation#2357
it will make all Ikhandles to sticky...
regards
Strarup
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Alex V. U. Strarup
One mistake can ruin it all...