ok, I just opened your map, and it opened around the position of 52, 497 on the map. Upper left corner. I had a missing file report.
MISSING MEDIA:
entitybank\\DriveCar_Pack\jeep1.fpe
entitybank\\Legacy Pack\Props Modern\Lorry.fpe
entitybank\\Legacy Pack\Props Modern\Waste Container.fpe
entitybank\\Legacy Pack\Machinery\Industrial (16).fpe
entitybank\\Modern Warfare\Props\Gencheff\Trailer.fpe
entitybank\\Free segment pack\Wall.fpe
entitybank\\Free segment pack\Floor.fpe
entitybank\\Free segment pack\Stair-base-support pillar-balcony\Stair middle.fpe
So I located you start marker in the center of the map by the media that was still there. Saved as a new map name. closed GG and reopened it and loaded the save as map, and it loaded and had me right over where I saved it.
Went one step further and panned so that the group of stuff was center on the left side of the edit window and zoomed out far, saved the map as a new name, closed GG and reopened it and loaded that map, and it was in the same position I left it and zoomed out where I was.
I get these maps sent to me and I see them at this position 52, 497 when they open the first time for me, But I can save them off and reloaded them were I saved them. So I can agree that something is wrong, but I am not able to reproduce the cause of this. and I try to break this, for testing.
So maybe this last part will be the clue. Have to figure how you getting out of that map. thru test game of thru the editor, or even the 3d edit mode part.
Intel(R) Core(TM)2 Quad CPU Q6600 @ 2.40GHz, 2400 Mhz, 4 Core(s), 4 Logical Processor(s), 8gb RAM, Nvidia gtx660, Windows 7 Pro 64bit