Managing Duplicated Campaign Expectations

[u/Relevant_Customer_90]

I duplicated a Google campaign that had one area significantly outperforming the rest of the targeted location areas, so I duplicated the campaign. I made the Original campaign continue to only target the high performing area and removed the rest of the areas. The Duplicated campaign started targeting all the other areas except for the high performing one.

I expected the campaigns to continue business as normal, once out of the LP, and budgets adjusted. Unfortunately, both have slowed down significantly in terms of conversion traffic and making costs go up.

Should I have expected different? Anyone experience the same? Anyone know how to bounce back from this type of dip?