Running both PASSOLO 2016 and PASSOLO 2018

Dear community, 

I wonder if it is possible with PASSOLO 2016 Team Ed. and PASSOLO 2018 Tem Ed. (license server) to access stored 2016-LPU files with PASSOLO 2016. 

The aim is to let them be under PASSOLO 2016 without upgrading them. Or is this not recommended? 

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