If I export data dictionary to my customer,dump include object of prog.scr,but not include the source of prog.scr,so can change customer's VRC of prog.scr/Libr after they import the dump?
Their VRC of prog.scr/Libr is older level before they import the dump.

Your customer will not be able to open the script to edit/view, as there is no script present in the application. But, from the backend he can create the document (by the name of that script), and can open for view/edit from BaaN.
I think that is what you wanted to know!!

If you wanted them to have the script source, that is an option on the export. If they already have source for that script, then they should either delete the source or you should replace it with the new source. Otherwise, if someone did a compile later on, it could work and overwrite the object you delivered with something that is out of date.