HP-UX SNAplus2 R7 Upgrade Guide (September 2005)

Upgrading from Earlier Versions of SNAplus2 to R7
Summary of Changes Between Releases
Chapter 28
Summary of Changes Between Releases
A Release 7 system can read all Release 6 configuration files, and can
run all applications built for Release 6. However, a Release 6 system
cannot read a Release 7 configuration file, and cannot run an application
that has been recompiled with Release 7 headers.