Yes Condor 2020 , EK do re recruit Ex-Emirates cabin crew. However each case will be individually looked at in respect of current age, the grade you were when you left and of course most importantly your personal records which show things like your reports and sickness.
I left and re joined and only had to fill in a 'rejoiner' application and I was allowed to rejoin with out any interviews so make sure you make that application a good one!!
It is a breeze the second time round as youve been through it all before and I found I acually enjoyed trainning school although depending on what grade you rejoin as you will be at training school for what seems like for ever after SEP and First Aid and then relevant grade training courses.
Good Luck and I hope you dont have to start again as a grade 2 !!!