Hello! I'm new here so go easy on me.

I have a master workbook I've created to keep key details about each individual client in one place, part of this workbook is an 'application' tab with several questions and dropdown boxes containing the possible answers. I use data validation to make these. Straight forward enough.
Each time a client comes up on our list, we pull the current template and fill it out and save it for next year. As the information we need evolves, I've been updating my template with new questions. I've come around to a client using an older version of the spreadsheet which needs to have the application tab updated to the latest version.

I'd like to simply copy the updated application tab from my template to replace the same tab in the old spreadsheet. Nothing else needs to change. Goal being to have the up-to-date questions list while retaining all the work that's already been done elsewhere in the workbook, which is substantial and generally will never need to change after it's been done once.

Is there any way to do this without having to either manually transfer the information to the updated template, or manually recreate each dropdown after copying the application tab to the old workbook? Neither of those options is ideal as we use this spreadsheet for most of our clients and depending on when the data was entered each client will have a different version of the template.

Some details:
When I Right click -> Move or Copy to a different workbook everything carries over with one exception- my dropdown lists, the most important component of this sheet.
I've also tried Paste Special -> Validation with no success.

The cell ranges my drop downs are pulling from are in a separate tab labeled Drop Down Fields which is present in both workbooks, but generally hidden.


I appreciate any thoughts on the situation.