STITCHING COMPLETED FILES

Welcome to the forums! It is possible to split a project and later merge it back together, but it’s not generally recommended. This approach can sometimes lead to complications, and it’s worth exploring alternative workflows if performance issues are the main concern. There are tips and tricks available to help optimise performance without resorting to splitting and merging. Check out the Troubleshooting chapter in the user manual war the knights for some suggestions.
If merging projects is necessary, the best method will depend on how the projects were initially set up. A common approach is to export the data to a CAD format and then import it back into one of the projects to bring everything together.
Just something to keep in mind if you're considering this workflow!

This is a very informative thread with plenty of practical tips and useful perspectives