Adwords Quality Score slap after account reorganisation

[ajaybali]

Yesterday I made some structure changes to one Adwords account I run.
What I did:
- I am using broad match in many ad groups and now decided to add some of the keywords as exact match with higher bids.
- moved adgroups between campaigns - I had products divided into several campaigns that had the same settings. Wanted to have them all in just one campaign to make it easier to manage.
- once all ads were in one campaign I made 2 copies of the new big campaign and targetted each copy at different locations and languages to be able to play with CPC.

Today I logged in to see how my changes worked and I was extremely surprised to see my QS go extremely down.

Before these changes I had QS of 8-10 for all of my traffic and money making keywords. After these changes my QS went to 3-4 and only some keywords have the default QS of 7.

Now, I cannot really understand what I've done wrong.
I did not disconnect keywords from ads - was moving entire ad groups.
I understand that new copies of the big campaign are new to Google but why the non-copy campaign receive a slap, too?

My website is not affiliate site and I only advertise on Google search and the website itself did not change.

Now, can anyone somehow explain what was done wrong or just give some hint what I've done wrong?