Looking at all the comments that go back 2 years this does not seem like a high priority for Smartsheet. This feature should have already been included and is needed to help users management large EXISTING sheets. Using the Row function will not work, NEED THE ABILITY TO COPY A COLUMN FROM ONE SHEET TO ANOTHER.
Duplicate & Copy Columns would make template building and scalability a lot better! Glad to hear duplication is on the roadmap and Copy is being considered.
Would like to upvote this but don't see how. It is not uncommon for a sheet to have the same contact list for different purposes and retyping this in or being unable to export and import, is unfortunate.