mortgage interest relief (seperated)

i bought out my spouse after a separation which involved a remortgage

is it correct that my mortgage interest relief should be reduced to 508euro / year instead of 800/year

mortgage interest relief - remortgage

i suppose that is considered a remortgage?

i have a mortgage single person for 2 years will i miss out on the higher relief for the remaining 5 yrs? if i am to remortgage would my interest relief be reduced ?