All work prefectly, I have been made it as You told outside Core and pass it to Save location.
Only have to solve how to delete ".pdf" from filename of saved EPS and erverything will work as I wanted.
Thanks a lot again. You saved me a week of time each year :)
My happiness did not last long, after further testing, it turns out that the saved EPS file does not keep information about the layers.
I have to have a EPS just like Adobe Acrobat "Save as" to EPS do.
I found something like this: