I’ve done many tests starting from your suggestions and I think I found the original problem.
I have a multisite installation:
– http://www.foodweb.it (own custom theme, own original content, same plugins, many copied configurations, italian language)
– http://www.italianfood.net (own custom theme, own original content, same plugins, many copied configurations, english language)
I created http://www.foodweb.it first then when I created http://www.italianfood.net I exported ASP instance configuration from http://www.foodweb.it and imported it in the new site.
Then I changed ASP instance in http://www.italianfood.net . Very few changes, mainly labels change (translation) and Multisite Options to http://www.italianfood.net .
I experienced some problems with labels translation but I had no time to investigate.
Now I found that ASP instances get syncronized/replicated/shared in http://www.foodweb.it and http://www.italianfood.net
Labels settings, Multisite Options, all settings.
New test instance created in http://www.foodweb.it (as you suggested) appear in http://www.italianfood.net too.
Resetting Multisite Options to default (no blog dragged to right list) fix live search results for both sites but labels problem is still present.
How can I separate sites?
As a quick fix I’ve duplicated current instance (export+import) and use one for http://www.foodweb.it and another for http://www.italianfood.net
Now I’m configuring the new instance for http://www.italianfood.net needs and fixing all ASP instance references (theme css, ecc.).
There’s a better way?
Thanks,
Alessandro