Piwik on HTTP and website in HTTPS

Hi There,

We switched one of our websites to https.
Our piwik is on a other domain on http.
Zo piwik is not tracking our rankings anymore.

Quiestion 1: I’ve read that piwik also had to be on https. Is that right?

Question 2: When we switch our domain where Piwik is installed also to https, WHAT HAPPENS with sites we track in this account that are stil on HTTP??? Will the tracking fail just like the current situation what is the other way around???

This is verry important for us beceause we track 3 sites on http and one on https in ONE Piwik account.

Please somebody help us out!

Cheers,

Wesley Kelder from the Netherlands