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Thank you both.  The URLs with TM are indexed by Google with TM in it, I suspect it will have impact on ranking if we simply remove the TM from URL, although nothing else changes.  301 is a protection, to certain extent. Happy Easter. b.dig

Thank you all.  301 is definitely the plan.  As Andy pointed out - to "predict" how Google will react to the change even with a comprehensive 301 effort is a miss and hit exercise.

Could you attach a screenshot? I think that could help us understand better what you are seeing. Thanks!

My pleasure!