I have rooted my xperia z3 had to downgrade to android 4.4.4 ?????

obviously i want to get back to the latest android version still with root if i upgrade to the latest version will i loose my root access is there a rom i can flash to get me back to the latest version i have had a look around but i maybe missing something simple cheers in advance

from xda-developers http://ift.tt/2aohzpr
via IFTTT