Yes save games will work when running your game through the editor.
Save game data contains all the relevant game data. Conditions, values, positions & so on & so on.
However I do not recommend trying to load save games during development. Whenever you create something new in the editor (condition, value, character, scene object, whatever) you are essentially changing the xml data, thus if you try loading from an old save game file after updating your game with new content or having removed / replaced content, then it's possible that your game may load incorrectly (buggy) due to not containing all the relevant data in your save game files.
For this matter, I recommend sticking to the autosave system during the development phase & deleting all your autosave files at game launch so that you start fresh each time you launch the game via the editor. You would remove those actions before compiling your finished game.