Bulk transferring Virtual copies edit values to the original image

Just have to ask

Why?

Another option: if storage space is not a problem and your aim is a separate usage, you can bulk Export any set of images whether those are Virtual Copies or not (into a new location, selecting Original as file type). This export option saves out copies of all the relevant Raws, TIFFs, JPGs or whatever they might be - with LrC metadata attached, that comes from the chosen master or virtual copy in each case.

In theory this could then be re-merged into the starting locations from outside of LrC, but I would not recommend this since it will be at best tedious, and at worst prone to all sorts of pilot error.

LrC will by policy and design not permit you to Export directly over the top of the present imported source files / their prior accompanying metadata. 

Photo>Set Copy as Original only works on one photo at a time so that will not work.

An easy way to do this is to use the Syncomatic plugin by John Beardsworth

https://https://www.photographers-toolbox.com/products/jbeardsworth/syncomatic/-toolbox.com/products/jbeardsworth/syncomatic/ 

Please create a backup copy of your catalog before you do this.

Select all of the virtual copies. Then use the command Photo->Set Copy as Original. (Note: I haven't tried this on 500 virtual copies; it works fine when I select one; if it doesn't work on all 500 at once, then you will have to do this one virtual copy at a time)