Near Intersection of I-35 & I-90 Southern Mn. | Just save them twice. Once to your "normal" location and the second time to the external hard drive. Would take a bit longer but then both copies would be identical. I always use the "Save As" rather than just "Save". This way I know where the updated version is saved and can change it for the second save.
Edited by tedbear 12/17/2018 15:47
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