Can you give a try in elgg_entities table?
they are set as metadata extras to the user. You will find them in the metadata table. The plugin extends the profile, it doesn't override it.
Table: elgg1810_users_entity
guid name username password
35 Admin admin 112233445566778899aabbccddeeff99
The PlugIn Profile Manager stores it's new admin-defined custom fields as metadata.You'll have to hunt around ( maybe in the P/M code).
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