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If you use categories to flag, tag or categorise your email take note of your colours and labels. In the Outlook ribbon, choose Tags, Categorise, All Categories and take a screenshot of the names and colours that you are using.
Please note care should be taken if you use Categories within Outlook because there is a known Exchange Online feature where the migration is likely to merge existing categories to the default categories. Full details can be found here: Exchange Online - Handling Migrated Categories - CSCS Guides - Confluence (atlassian.net)
Save PST archive files (note: not applicable to most users)
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