When updating an Obs, order property is lost

When updating an Obs, the Order property is not copied over from the old obs (which will be voided) to the newly-created Obs.

I assume this is a bug and not intentional burke dkayiwa mseaton?

Our obs functionality is a little brittle, because all properties need to be manually copied over, see:

https://github.com/openmrs/openmrs-core/blob/master/api/src/main/java/org/openmrs/Obs.java#L217

We probably should have a more automated way of copying an obs, with a means to exclude certain properties?