Adding extra parameters to destination URL

Will cause to lose history?

[fischermx]

Hi,

I've just added some parameters massively to lots of ads in my account, specifically something like &src={ifsearch:src}{ifcontent:cnt}.

I didn't change the full destination URL, but just these parameters were added.
I wonder if this will affect the performance history of my ads.

[makee]

They are treated as new ads, so the ad history is lost.

[nimeshatbms]

If you make any changes to the destination URLs, Google will consider it as a URL to a new landing page. So, the ads will loose all the history, but if your ads were good, they will get back the performance, but you have to be patient.