I don't think it turns to Pro since each module has its own serial number.

You might try asking e-on tech support if you get credit for the modules.  That's something I'd be interested in knowing as well because I'm thinking about sidegrading to Pro, too, instead of purchasing the other modules separately.  The sidegrade to Pro from Esprit is $199 USD while the sidegrade to Inf from Esprit is $499.  That's a huge price jump but, from what I can see, you can't paint ecosystems in Pro like you can in Inf.

I've been playing with the Vue6 Inf PLE and I do like being able to actually define my ecosystem placements.  I just don't know if that's going to be the difference between going with Pro or Inf for the sidegrade.  Maybe I'll go with the sidegrade to Pro right now and then sidegrade to Inf later.  It will still br approximately the same amount of $$ just spread out over a little time. 

Hugz from Phoenix, USA

Victoria

Remember, sometimes the dragon wins. Correction: MOST times.