In general terms, when agreements come into effect and a treaty is concluded with a country, inevitably there are going to be changes of government on potentially both sides. These agreements always will have an institutional clause that says if one party or the other wishes to terminate an agreement, there are procedures set in place to do so.
But as far as I'm aware, at least within my realm of activities, these treaties simply carry on after a change of government. We have no reason to believe otherwise.