I inherited an Adwords account at my new job. The account is 5 years old with tons of history. In order to set up proprietary tracking I need to roll out KW level URLs (they have always used Ad level URLs which continuously reset Ad history with any testing/edits).
There are approx. 165,000 KWs with roughly 30 KWs driving 90% of the business.
My questions is what do you think the best approach would be to rolling out the KW level URLs with the least upset to performance?