The answer is... It Depends.
Specifically, it depends on if the game is a Remake or a Remaster.
So, what exactly is the difference?
Remakes take the core concepts and/or story of the game and rework how it plays.
Examples of Remakes are: Shadowgate 2014 and Metroid: Zero Mission.
For these, each version should have their own tag as the questions for one will not be related to the questions for the other.
Remasters do not change the core game, they only update it with new graphics, sounds, and controls.
Examples of Remasters are: Secret of Monkey Island: Special Edition and Grim Fandango Remastered.
Remasters should not have their own tags unless it is something specific to the version, such as a technical support type question or how to switch control schemes.