same ad, 10% pts worse CTR?

[ucdawg12]

I had to change the destination url in some of my ads yesterday(but thats it, everything visible is exactly the same) and my CTR has dropped from 13% to around 3.5%, I have no competitors on this keyword or anything, my adrank is exactly the same and Im pretty sure the ads have been approved of because Im getting the same amount of impressions. Is this drop in CTR permanent? I have heard of things like this happening before but I can't believe they are permanent. I can't understand why basically the clickers would stop clicking on an ad that appears unchanged. Do I need to let time rebuild my ad or something?

Thanks

[mike_ppc]

When you change ANYTHING in the ad, your history is reset. Very curious if this happens when you are the only advertiser on that keyword... but you could receive "interference" if you have phrase-match or broadmatch - so in fact you could have competition!