| I know this post is old but just read it and probably redundant now but I dont know why anyone (even italians) would try to dry tomatoes for paste. It just doesnt make sense.
What you probably saw was, yes tomatoes mashed down and being dried, but not into paste.
There are many ways to dry tomatoes, accessible on google, or you can by a food dehydrator that works well. There is also a system for drying in your oven by leaving the door open, on a low heat and utilitizing a fan to circulate the air for fast drying. Bon apetite ! | 
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