When importing an Creo 3.0 assembly into SolidWorks 2017 I can't find the option to use existing. The only option I have right now is to import then replace the components with existing files.
Can you screen grab your Tools > Options > Import page with Creo shown in the pull down- maybe you are using 3DInterconnect rather than the traditional translation for Creo files- if so try with it unticked.
That did the trick, I've been using 3DInterconnect at the advice of Solidworks to import Creo 3.0 models and assemblies and it still works better for importing models but I will switch when pulling in assemblies.
Thanks for your help
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