Part L - bad reference CONSTRUCTION

I've copied a project and renamed it in order to undertake a number of modifications, I've ensured that the dgn file is identified with the correct folder (the new one) however when running the Part L I get a string of "bad references: CONSTRUCTION & GLASS"  - the files in the standards / catelog folders is a copy of the oringinal but it's not reading them nor is it reading the original position folders. 

Any ideas out there ?

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