maps in memory??

I have downloaded two maps,each having a different name with different amounts of memory. When I go to "Open existing file" regardless of which map I try to open, I get the same one, and only one. I have moved them to different folders and tried that with the same result. They both appear in the folder as the separately named maps. If I go to the folder thru File explorer, rathger than starting the Back Country program, and double click on them, I still get one and only one map. HELP! Thank >:( :(s