Hi Gee-M,
Please make sure that the Excel sheet where your have created your own data, is in the same book to which Excel is connected to.
Let's say MFpro is connected to book1 and your sheet is stored in mybook thank MFpro will not find your sheet.
You can insert for example a new sheet to the book where MFPro is connected to (that one that also shows all the markets after you launch Excel). Probably the name of the new sheet is something like Sheet1 or Sheet2 etc.
Then copy the data from your original sheet and paste it to the newly inserted sheet.
After that try to import selections from a sheet (via Settings - Excel) again and make sure that your right the letters for range with capital letters and also output starting column should be a capital letter.
Also the sheet name must be correctly specified.
And yes, don't forget to load the relevant markets, too.
Try it again and let us know whether you can get it to work.
Cheers,
bamthwok