Hi Courtney,
If you have not considered this already you may want to
1. Create test contract workspace by doing a copy from project (older workspace)
2. change the parameter
3. change the template and publish it
4. Go back to your test workspace you created in step 1 and then edit draft/amend it to see if you find any issues.
This should be a sufficient test to check the parameter change effect. Needless to say, in case of any issues you can revert changes to previously published version.
Regards
Vilas