Questão jurídica principal
Whether the 1999 maintenance undertaking covered social welfare paid after 5 September 2000.
Decisão extraída
The undertaking was valid only for the duration of the residence permit extension it supported, until 5 September 2000.
Fundamentação extraída
It was obtained in the context of the permit-extension procedure and, in good faith, could only be understood as securing support for that specific one-year extension; later permit renewals occurred without the appellant's involvement and after a fundamental change in circumstances.