I combined 2 documents, when I click refresh or add bibliography it deletes the text of my second document and puts the bibliography where the text of my second document was. How do I fix this?
Sounds like you copied the 2nd document into where the bibliography of the 1st document still had hidden markers. Show field codes to make sure the bibliography is actually properly deleted, then paste the 2nd doc: https://www.zotero.org/support/kb/word_field_codes
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https://www.zotero.org/support/kb/word_field_codes