I recently got a new pc and I was wondering how to transfer one specific map, so that I can continue developing the map,  of mine to my new pc. I don't now which files I need to transfer or what dependancies my map might have. On a side note I would also like to know how to fully backup a map & all of its files in case something goes wrong.

Map_source contains prefabs and maps.
Mods/mapname/ contains custom scripts sounds ect.
Zone_source contains csv associated with your mapname.
Custom models and textures will need the gdt and original files associated with them.
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Create a new map with a script placer on your new computer. Compile and test it to be sure you installed modtools and updates correctly.
Replace your NEWmapname.map with your OLDmapname.map
Copy any csv edits into your new map csv.
Copy any custom scripts over and update your mapname.gsc