How to change different versions of ROM files? Or switch between different versions of ROM files?

[g2mXagent]

for example:
I have "game_rom_ver1.smc" and "game_rom_ver2.smc", and I want to replace ver1 with ver2. How do I change it? 

Or can I just delete the old one and then import the new one? Can different versions exist at the same time?

[Headrush69]

There are several ways you can handle this:

• Import the second rom and name differently
• Edit the details of the ver1 and edit file location and point to ver2
• Select both roms, right click and pick combine from the contextual menu. Now edit the details of the combined entry and set the version you want to have as default. (Double clicking starts that version, use contextual menu to start alternate version.

I would suggest naming your roms with non-game title information within parentheses. eg game_rom (ver1).smc. When importing, LB will not use the (...) information in the display name and you can automatically have it combine roms with the same name.