yes, all recorded clips will overlap the previous and existing clip material; there's no current straight-forward way to replace the existing material, sorry.
you'll probably need to cut and paste the new clip over the range of the old clip that you may delete; then merge the clips together.
yes, all recorded clips will overlap the previous and existing clip material; there's no current straight-forward way to replace the existing material, sorry.
you'll probably need to cut and paste the new clip over the range of the old clip that you may delete; then merge the clips together.
hth.
cheers