I agree with Gupta and I would take it a step further...
Initially I was eagerly awaiting the AC PM module with plans to bring everything into one system, thinking that it would ease workload with only a small increased cost from what I had been doing (Office Ally).
However, I think the pros of having a separate PM system outweigh the cons. An EMR change or malfunction could jeopardize the bottom line in a major way if your patient accounting is affected. I decided to go with a cloud-based PM system so that I don't ever have to worry about losing any account information. I still like the idea of keeping my EMR in house.
If all it takes is a 2-minute daily export for peace of mind, it's worth it to me. The cost will be the same regardless.