Welcome to the forum.
You will want to Export as a Template, into the folder of your choice. That will yield a .PRTL file, that can then be opened in PrE 10. Unfortunately, I know of no way to automate, or batch that, so you will want to launch PrE 4, and then the Project(s), Select the particular Title, and choose Export>Template (or similar syntax).
I have my personal Title Templates located in a "Hunt Titles" folder. It is then available to PrE and PrPro.