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Thanks I will investigate further. Looks like I could possibly use Tilekit and then load into Tiled and then use GMTiled2 by Meseta | GameMaker: Marketplace (yoyogames.com) to import the TMX files directly in. Seems to have some limitations. Thanks for the response. 

He says it exports to JSON.  I'm pretty sure GMS2 put JSON support in, perhaps that can be used to parse the files?