Move data file to another package

How can I move the data file to another package?
Or move the program file to another package.
My default datafile is placed in another package than the program.

At a first glance your question seems so simple that I’m now wondering If I really understand it

Extract those files from your old package : (X is normally the name of the structure file)
X.4DD
X.4DIndx
X.Match

Place it on a new folder location.

When you open your application, you can press the ALT key a start up for select a new data file.
Choose the X.4DD you just move.