Thanks for your reply. I’m not so concerned about the actual migration from v11 to v12 itself as I have already carried out some testing. I am more concerned about the fact we are using versions that are no longer supported.
I’m trying to factor the project to migrate to v12 into our list of priorities but I’m not sure how paranoid I should be about continuing to work with v7 and v11 at least for the time being. I suspect that we won’t be fully migrating to v12 until next year but if v11 suddenly became unstable for any reason we would be in a spot of bother!