Replacing Lost Media?

I'm trying to work through the annoying non-AVI support for DV25 files to re-edit some DV footage. I used a python script and ffmpeg to just change to a mov wrapper with a copy.
So this works fine. A little annoying to run a script to process 967 GB of video files.... But anyway, just computer time, now that I have the script written.
The problem I'm running into is importing the timeline. I can specify to ignore extension and it jumps from .avi to .mov for almost all media. However, some it still stays at .avi. I can't figure out how to get it to cut over.
So I have a timeline with red clips with '?' for about 16 of my source files. I can't figure out why they are not matching. So I need to replace the clips.
I can't figure out how to tell Resolve to use a different clip with the same cut. Is there a way to do this? I've looked through the manual and clip menu. All things I can think of. I'm stuck.
Best I can do is double click the '?' clip to bring it into the viewer to see the in/out. Then load the same clip from media and set the in/out as close as I can and drop it in the layer on top. Do able for the 50 or so clips, but would like to know a better way if I plan on importing 85 scenes of a feature length into Resolve.
Edit: Using 15b6 Studio
So this works fine. A little annoying to run a script to process 967 GB of video files.... But anyway, just computer time, now that I have the script written.
The problem I'm running into is importing the timeline. I can specify to ignore extension and it jumps from .avi to .mov for almost all media. However, some it still stays at .avi. I can't figure out how to get it to cut over.
So I have a timeline with red clips with '?' for about 16 of my source files. I can't figure out why they are not matching. So I need to replace the clips.
I can't figure out how to tell Resolve to use a different clip with the same cut. Is there a way to do this? I've looked through the manual and clip menu. All things I can think of. I'm stuck.
Best I can do is double click the '?' clip to bring it into the viewer to see the in/out. Then load the same clip from media and set the in/out as close as I can and drop it in the layer on top. Do able for the 50 or so clips, but would like to know a better way if I plan on importing 85 scenes of a feature length into Resolve.
Edit: Using 15b6 Studio