Are you using folders?
You may want to change any Generic Reference type to a more specific type, e.g., Journal Article Reference; Conference Proceedings Reference; Book, Whole Reference. To change:
Edit | Reference Type [make a selection]
Best practice: Select a few of your more complicated references, e.g., video format, customized fields, personal notes and use them as a sample export. You will immediately see which fields transfer seamlessly into Mendeley and which ones will require editing.
Fields with no equivalent in Mendeley, e.g., Personal Notes, Author Address/Affiliation, Database, will not be transferred. You may add the information into an alternative field or into a note.
Anything in the RefWorks Personal Notes field will not transfer to Mendeley. However, you can copy and past the Personal Notes content into the Mendeley Note field.
To retain the formatting of your Personal Note, e.g., paragraphs, bold, italics
NOTE: If you copy the note directly off the RefWorks screen and paste it into Mendeley Note, formatting will be kept, but a large amount of extraneous HTML is included