Every day I have new questions to merit. So, I have activity 238, to the next rank I miss 2. My Merit number is 101 and for the next rank requrement is 250. Will I stay in my full member rank as far as I will not add 149 merits more? Yes? No? Maybe? 
in the same boat amigo... you need 250 merit now regardless if youre 240 activity or higher .... so 250 merit or you will stay full member , even if you have the required activity it doesnt matter