I have one running project say MyApp - ver 1.0, this project also contain some 3gp files

installed under my /myapp directory.

Now i have made ver 2.0 of MyApp.

What i want is to reuse the 3gp files of ver 1.0 in my new ver 2.0.

can this be possible without specifying the SU(sisupgrade) line in my pkg file. Because if i install my files without "su" attribute. The installer first removes the previous application and then begin installing the new one.

Thanks in advance.