No. The expansion memory will be formatted to accept the new system.
You have to setup YEM with your old packs as you did before, and if you want to you can add the GenosV2.0 SuperiorPack.
Since the Genos_InstrumentInfo.n27 file of Genos 2.0 is different from firmware 1.41, you have to delete the current Genos (see Target) in YEM and make a new target with the new Genos_InstrumentInfo.n27 file from your Genos: (Menu -> Menu2 -> Expansion -> Export Instrument Info)
The first time you MUST save as a "Pack Installation File *.cpi"
Afterwards, you can add Packs without the need for formatting = Save As ‘Pack Quick Installation’ (*.cqi)
Stijn
PS: unticking existing packs in YEM is not the way to do it, you must keep the packs selected in YEM, unticking them means 'Delete' them from the expansion memory.