Prevention (backing up .p files) is the only real solution.

A .r file compiled in Progress v9 cannot be easily read by a tool designed for OpenEdge 12.

Unlike traditional languages that compile directly to native machine code (like C++), Progress compiles source code into an intermediate bytecode. The Progress OpenEdge Virtual Machine (AVM) executes this bytecode at runtime. An R file contains several distinct segments:

R-code is highly portable across different operating systems.

. Because Progress Software does not officially support reverse-engineering these files, "decompilation progress" is largely driven by third-party tools and independent community efforts. Current State of .r File Decompilation

In the world of Progress OpenEdge development, a is the compiled binary (r-code) generated from uncompiled source files like