HelloMany thanks for your responses: they are most helpful. I believe that 1.9.1 is now the latest stable release so I will go with that as the version I will work with, even if there are more upgrades in the future. However I am still concerned about the last point in my last post, i.e........... this test upgrade will take some time to do and so, when I do
the final upgrade, will I have to repeat this process in its entirety
(i.e. upgrading my live 1.6 to 1.8.x and then implementing the bespoke
changes) so that the extra tickets that have come in since the test site
was completed are incorporated in the upgraded MySQL database, or is
there now a procedure to transfer new 1.6 tickets that have come in
since my test upgrade to the upgraded database?Mike