Before exporting a given UserContext to PRIDE XML file, you need to poupulate MSI database with missing spectra.

• After having created or opened an hEIDI project, open your MSI session but Don't forget to activate your hEIDI project.
• Select a UserContext. It has to be grouped and saved to MSIdb.
• Select the menu MS Identifications→Database Update→Populate with spectra
• A dialog will appear on the screen to indicate if spectrum details are missing for this UserContext

• If spectrum details are missing, click on Ok, populate MSIdb with missing spectra, else click on Do nothing & Close this window
• In case you have clicked Yes, a message will appear when process is finished