But how does FLIP or WinISP convert from 06e8h to 0000h? And the data fields change as well
My (educated) guess is thst the file is simply sorted to sequential addresses. This is a VERY simple procedure and does not affect the program. I would think that it is a whole lot easier to upload sequentially.

Try manually using your editor to find the ssame addresses in the Keil hex file and I am 98.17% certain that you will see the same data.

Have fun,

Erik