http://www.perlmonks.org?node_id=660657


in reply to Experience with ActivePerl 5.10 vs. 5.8 PPM incompability

Check out the ActiveState faq under Upgrading from ActivePerl 5.8.x. Apparently, you can save your 'PPM Profile' thus:

ppm install PPM-Profile ppmprofile save C:\profile.xml

Then, when you have installed 5.10:

ppm install PPM-Profile ppmprofile restore C:\profile.xml

However (disclaimer), I haven't tried this yet...