Importing products from 1.4.X to new 1.5 shop

[BillyHardcore]

Hello guys!

 

Stoked about the release of 1.5, and I barely can wait to get down and dirty with the new functions.

 

I have successfully created 3 shops, all 3 on their own domains, with only one Shop installation.

So far so good..

 

I have 4 old webshops, currently running presta 1.4.4.2, each on their own domain, database, and pretty much unique products per shop.

 

I know that I can upgrade each shop to 1.5, but I want to incorporate the 4 old shops into the new 1.5 installation, which is configured for multistore.

I want to import all products, categories etc, from my 4 working 1.4.X shops, into the new 1.5 shop.

 

How would I go about doing this?