Create a library of your publications. Then, under the Actions Menu (the gray gear icon) find and click on "Export Library" or choose File>Export Library.
When asked for export format, choose RIS.
Save the .RIS file.
Login to Elements and, under Menu at the top of the screen, choose Manage Publications: Import.
Upload and import the .RIS file you generated in Step 3 as the "Reference Manager/Endnote" file type.
Important! Review the imported citations because the data may not be completely correct. A common problem is in the citation type; there may be confusion in records between book chapters and books, articles and conference proceedings, and so on.
At the top of the page, go to Menu > Manage Publications to review your publications list. To make changes, look for the yellow pencil icon () that appears in the citation for each publication.
For more information on exporting information from Zotero, visit the Zotero documentation.