Interpolate Shape drops M values

[KimOllivier]

Problem: To create a graph profile with a featureclass you need M and Z values.
Therefore use a route featureclass and overlay over a DTM to add elevations using Interpolate Shape tool.
But then the M values have disappeared, so I have to rebuild the M values from somewhere.

Could the M measures be retained?

[ClaytonCrawford]

This is being worked on, planned for Pro 3.7.