Endnote X8 cannot insert citation

Dear Supporting staff,

I remove the Mendeley add-in and it work fine for me. However, whenever I imported references from PubMed database and try to cite the bibliography, it does remove the journal name and the publication year. I had to key in those missing varaibles mannually in Endnote X8 before I got correct citaion. Is there anything that I may need to correct or If there is a way I can downgrade to Endnote X7 I think will be better because even Finding Full Text in X8 version are only restricted to 250 articles unlike the X7 which allows up to 1000. 

Thank you for your usual advice.

Umar.