@Matt F That is correct, I have tried what you mentioned, but I am getting the same results, the field is being copied over to the measurement.comments field in the UI, but I do not see the value saved to the database. To expand on the steps taken:
1) I created a relationship from the AssetMeter table to the Measurement table
2) Create a Automation Script, with an object launchpoint, save event, on add & update and setting to after commit
3) Script variables are remarks (binded to remarks) and comments (binded to measurement.comments)
4) Script reads as:
if remarks is not none:
comments = remarks