If you are planning to upgrade an existing project from 2018 to 2021, there are a few specific "gotchas" to watch out for.
While the fundamental toolset remained stable, these versions mark a significant transition in operating system support and architecture. LabVIEW Control Design and Simulation Module Download - NI labview control design and simulation module 2018 2021
The 2021 release brought a dedicated MATLAB node for direct interaction with .m files and updated the Python node to support Python 3.9. If you are planning to upgrade an existing