Expand the motion path frame range options with an extra option "Manual Range". When chosen, Blender will not automatically update the path range any more. Additionally, the start/end frame fields are greyed out in the UI when one of the automatic range options is selected (i.e. all but the new "Manual Range" one). It is still possible to set the start/end frame temporarily, but the original behaviour (of recomputing those on update) remains. Manifest Task: T101522