Are you saying that
- you have 2 separately packaged parts of the application that are to be imported into the system cache,
- both of which have almost identical URL (to the respective jnlp files) except for the query string (the part after '?' in the URL), and
- it seems that only the 2nd jnlp file remains in the cache?
One way to test if the 2nd jnlp file is indeed overwriting the 1st is by executing the javaws commands manually via command line. Check the cache after each execution to see if the 1st jnlp file gets cached before being overwritten by the 2nd jnlp file.
If the 1st jnlp file is being overwritten, it might be that the 2 jnlp files are not uniquely identified. See Java Web Start - Frequently Asked Questions (FAQ)
for the answer to the question, "How are Applications uniquely identified?"
I'm not sure... perhaps "Version-based Download Protocol" might also help in your case. See https://edelivery.oracle.com/otn-pub..._5-mr-spec.pdf