How to replace a part in multiple assemblies.
Solution
You can use the 'Design Manager->Tools->Design Manager Assistant'. Set the Action to 'Replace a file'. Click Next. Browse to 'Select a file reference to be replaced'. Browse to 'Select a new file to reference' and click on 'Next'. Ensure that the 'Used in' folder has the correct entry. Then click 'Next' and click 'Finish' in the 'Where Used' dialog. You will now see the part to be replaced at the top of the grid and the assemblies below. Click on 'Perform Action'. The assemblies should now reference the new part.
Notes and References
Hardware/Software Configuration
Platform: INTEL
OS: window
OS Version: n/a
Product: SOLID_EDGE
Application: DOC_MANAGEMENT
Version: V109MP6
Function: DESIGN_MANAGER
Ref: 001-8889714