Unfortunately, there is no way within Avid to tell the box that a particular drive letter in Windows is the same as a particular volume name in Mac. Resolve allows this in a shared database environment, but Avid does not.
Having done this myself with a 9 month shoot a couple of years ago, I feel your pain. My solution was to copy the project over, which I assume you have done. Leave the original amas in their current location. (always keep your original ama’s)
Create a new bin called mac links, or something like that. Use the alt drag method to drag all your red clips into this new bin. (or perhaps the source browser will work as well, depending on your folder structures)
This will create a set of new amas in this bin, but it will also update the path of your original amas in their original locations. Once all the clips are in, you should be able to delete the ‘mac links” bin, and use the original links as if nothing had ever happened. A bit more time consuming than just entering a new path for files…which I have been asking for in the ama world for years, but it does work.
Glenn