In theory there should be no issues and your array will remain intact. Configure the new board for RAID (hint: make sure you this BEFORE you install an O/S) and use <CTRL-I> to enter the RAID Configuration Menu. You should be able to verify that the array is intact...
i have good news:
regarding the OS it didnt boot at first, in safe mode i was unable of installing the drivers of the new chipset because windows installer service was arrested, so i managed to boot in VGA mode and from there i could update all the drivers (chipset, lan, audio vga wifi bluetooth...)
regarding the RAID array i set RAID mode in BIOS then everything went ok, windows recognized the datas while it did the rebuilding that lasted a day or two