likely indicates the version number of the software or game. In software development, version numbers are crucial for tracking updates, patches, and changes. The "v" stands for version, and "098" suggests it is version 98 of this particular software.
Move your saved data back into the new saves folder. (Note: Due to the engine changes, some v0.97 saves may still be buggy; starting a New Game is often the smoothest experience). Final Thoughts my new life revamp v098 patched