It seem clear to me that a design mistake was made when Resolve-Path and Convert-Path were created, and they both return only resolved paths (i.e. the path must exist).

The right design would be to have Convert-Path not care if the path exists, and if you care, you use both commands.

Since that ship has sailed, I propose adding a -Unresolved switch to Convert-Path to change it to do what it should have done all along, called GetUnresolvedProviderPathFromPSPath instead of calling GetResolvedProviderPathFromPSPath.

If nobody has a problem with that ... I can send a PR