Here's a quick way to replace the patched fixtures.
In this scenario, you have created a project with many effects and using many fixtures. Some week later, for another show, you want to reuse your effects but with another type of similar fixtures. For example, you initially used 20 Chauvet moving heads with CMY color mixing and now you want to use 20 Martin Mac 101, with RGB color mixing.
Solution: Use the Import feature
1) Create an empty project
2) Patch your new fixtures
3) Go in the File/Import menu and select your old project
4) Click import all, without checking the import patch option
Result:
Lightjams will recreate effects in your new project by merging the fixture IDs and their attributes. This merge is at the logical level instead of DMX address level.
You can also do this to change fixture modes or do to deep DMX address reorganization.