pub.remote.invoke migration issue from 4.6 to 8.2

Hi

We suppose to migrate the package from 4.6 to 8.2 environment.

There is one built-in service ‘pub.remote.invoke’ is exists in the package which invokes the remote webMethods service (IS exists beyond our firewalls and different network zone)

Now my doubt is when we migrate the package in our environment from 4.6 to 8.2, how this remote: invoke service works.

As of my analysis, in 4.6 webMethods maintain records and from 6.1 onwards webMethods maintains documents.

Please let me know how to proceed further.