Will shifting of data from one to another campaign affect?

Variation in performance

[Vardhani]

In one of our accounts, we have paused the old campaigns and created the same setup in another campaign and activated. Then, the keywords that were performing in the old ones stopped converting and vice versa. Observed the same case, when we have moved or copied the old campaign setup to new ones. We will follow this in case of restructuring the campaigns if not well structured. Why shifting affecting the performance?
Have anyone faced this problem? Please suggest me a solution for this. :(

[nimeshatbms]

You may not get the same performance in the new campaign as you were getting in the old one, because for Google it is a new campaign and it has to get a history and quality score from scratch.

Bu if you are restructuring the campaigns based on relevancy and other factors it is better to do it ASAP. Because even if you have few issues in the initial stages, better structure will give you benefit in the long run.

[Vardhani]

Thank You. But why the keywords that converted previously were not converting? Why that pattern changing?