TYPO3 Core

When importing a t3d file using the import/export module of Typo3 and the saltedpasswords extension is enabled user passwords will not be imported if they are already salted.

The method evaluateFieldValue in TYPO3\CMS\Saltedpasswords\Evaluation\Evaluator sets the "set" flag to false when saltedpasswords are enabled. After that there are some checks for the password hash method that might have processed the password value.

The problem is that IF the password is already a salted password, the "set" flag remains false - and therefore the imported password hash is not saved to the database.

To reproduce this:
- Export a page tree (t3d) with be_users or fe_users (which have a salted password stored in the database)
- Import t3d file
- Passwords of imported users are empty