Can. 1512

When the citation has been communicated legitimately or the parties have appeared before the judge to pursue the case:

1/ the matter ceases to be res integra;

2/ the case becomes proper to the otherwise competent judge or tribunal before which the action was initiated;

3/ the jurisdiction of a delegated judge is fixed in such a way that it does not cease when the authority of the one delegating expires;

4/ prescription is interrupted unless other provision is made;

5/ the litigation begins to be pending; therefore, the principle while litigation is pending, nothing is to be altered immediately takes effect.