Documents version mode

Hi everybody,

I'm a quite new ueser of ARIS Cloud and I'd like to know how the counting of the documental tracks works.

I mean, as you can see in the attachment, I circled in red the 2 variables whose I care. 

I understood that in "Versione corrente 1.5.0" when a new editing occurred in the document the number in the center (5) increases. 

At the same time when I upload a new version of the document the counter of "Versione 2" increases.

I don't understand when the other two counter of "Versione corrente" (1._.0) increase.

Could someone explain how they works? 

Thank you so much.

Best Regards,

Michele