Ok I just got windows XP for Xmas, and tried this, I loaded Mike 2 first, then Vicky 2, I set Mikes body to Heavy, and nothing happened to Vicky, until I moved Mike back then her body cloned Mikes and they were both heavy! So they looked okay until I moved them :(

Poser 9 SR3  and 8 sr3
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Processor Type:  AMD Phenom II 830 Quad-Core
2.80GHz, 4000MHz System Bus, 2MB L2 Cache + 6MB Shared L3 Cache
Hard Drive Size:  1TB
Processor - Clock Speed:  2.8 GHz
Operating System:  Windows 7 Home Premium 64-bit 
Graphics Type:  ATI Radeon HD 4200
•ATI Radeon HD 4200 integrated graphics 
System Ram:  8GB