Working with Part ReferencesKeyCreator \ Assemblies \ Overview \ Working-with-Part-References
When working with part references, it will be important to keep the following in mind:
Loading a Referenced Part:
If an external referenced part cannot be located when you attempt to load a file, an Error Loading Referenced Part dialog will appear. From this dialog, you will have the option to reconnect (try again), abort the loading of the file, or suppress the target part (see Suppress/Unsuppress for an explanation). It is suggested that you use the Abort option if you need to stop the load and logon to a network before working on a part. Select the Reconnect All References That Point to the Missing Part setting to search other references in the part. If any are associated with the part being reconnected, they are updated to the same part.
Reconnecting Nested References at Load:
When trying to reconnect nested references (references to other parts that have references themselves) at load, do a Save All after loading.