Although we do our best to keep track of file replacements, Matthias Büchner (buechner@pik-potsdam.de) would greatly appreciate a short email from you if you replace a file, including the reasons for doing so.
It is obviously extremely important for the consistency of the analyses that you use the most up-to-date versions of the data. We therefore suggest that you check this table regularly, and in particular before submitting your papers.
For a full list of models that have uploaded ISI-MIP2.1a simulations, you can always check this page <http://vre2.dkrz.de:8080/isimip2_uploadstats/overview.txt>, which also lists the date of the most recent file upload (which may be a new file or a file replacement).