Template changes for each project

I have different templates saved for each county that we work in NY, because of differing labor rates under prevailing wage. I'm having trouble when I set one template for a job (e.g. Broome County), then when I open another active project that was set under another county template, it switches to whatever template I was using last. This can be resolved as long as I remember to switch to the correct template each time I open a project, but there are days I'm switching between a few different projects and accidently add labor rates under the wrong county. Any thoughts on how I could resolve this?