acts_as_attachment -> attachment_fu, db_system -> file_system

Hi

I currently have an app running with acts_as_attachment and db_system. I would like to convert it to attachment_fu and file_system.

Has anyone done this? Are there any pitfalls? I am aware that the change from acts_as_attachment to attachment_fu is just a matter of replacing the plugins, but I am wondering about the switch from db_system to file_system. Is it as easy?

Just fishing for pitfalls really.

thanks
ivor