Dear ladies and gentlemen,

for my master thesis I have to analyze process models. 
I received models as an .adb file which I cannot open with ARIS Architect & Designer 9.8 (free student version). 
According to the modeler the modeling was done with the 7.1-version of ARIS.

Could you please tell me:
a) how to convert the .adb file so I can open it with ARIS Architect 9.8, or
b) if I could get an old (and free) 7.1-version of ARIS?

Thank you very much in advance!

Best wishes
Tags: ARIS Architect Import