After a longer discussion and some problems with some of the results I have decided to set the min BOINC version to 7.1. If you are still running any older version like 6.x please update as soon as possible. There will be no more work anymore sending out for these older versions.

The changing doesnt work in 2 different configs. Some older clients still getting work, still investigating whats wrong.

It looks like that the current server software doesnt support any changes (bug?) and I dont want to upgrade yet. I have set back all the changes as before.