So, I have a client who has a second site which ranks much better than the original site.

The second site pulls, on average, a Top 15 portfolio for high volume, high competition terms (and climbing) currently with a lot more promise due to a cleaner backlink profile.

The original domain is stuck in the high 20's with a tore up backlink profile from past wreckless/abusive SEO firm(s).

Would it be wise to swap out the original, lower-performing domain in GMB account for the higher performing domain just to see how the listing would perform?

Not worth the risk? Worth waiting it out?

This client is only 3 weeks old but is high pressure to perform, fyi.