To answer your question: Dvur got kicked out of EAZA in 2010 due to animal transfers that were outside EEP recomendations. (btw, it got its membership back in 2015 after change of director).
To Al Ain.
On one side, I understand why TAG tries to dissuade new imports of elephants from wild. It tries to force members to fully cooperate in breeding program, to make sacrifices and transfer animals between zoos to enable better breeding, to build more space for bachelor herds after zoos realise that fully sustinable zoo population needs such spaces etc. While possibility to import wild elephants enables zoos to behave selfish and just import young cows whenever they want and just forget about bulls or better facilities. And also, it it helps EAZA to reply militant animal rights activist that EAZA members dont import wild-caught elephants anymore.
On the other hand, EEP simply doesnt have young cows that could be sent to AL AIN even if they begged, it was probably choice between import from namibia and having no elephants at all. Also, Al Ain lies outside of EU/EEA/Schengen area and that makes import and export of most animals somewhere between prohibitively expensive to impossible. EAZA giving membership to zoos outside Europe is something I see with sceptical eye, because running EEPs that require regular oversea transport is something that will dissuade most participants to accept such recomendations. Elephant transfer within continental zoos can run way over 10.000 euro, can you imagine an overseas transport pricetag?
And another point to consider - Namibia is least corrupt country within Africa. It has strong institutions and is able to safegueard its wildlife, national parks etc. Their wild elephant population is growing for decades and probably reachs maximum capacity of enviroment. To legally import a few elephants from Namibia wont touch the wild population in any negative way (it would be like catching a small red deer group for zoo purposes somewhere in Scotland).
At the end of the day, EAZA membership termination usually doesnt have just one cause, it is end stage of larger overall dissagreements. But, if EAZA has no problem to have Poznan zoo (that ignores most EEP recomendations) like its full member now, it seem pretty inconsistent in its decisions.
