German to English Law/Patents Finance (general) Factoring

I thought I'd throw this out there. Due date tomorrow 9 a.m., and this sentence is killing me. Maybe some Western Hemisphere types will do me right while I catch a few zzzzzzzzzzzzzzs

This is a factoring agreement and this comes under the section Veritätsgarantien (which I have translated as bona fide guarantee, which doesn't sound right either)

Die Firma sichert ferner zu
- dass sie – soweit sie die gemäß Ziffer 1.2.1 angedienten Forderungen nach Maßgabe eines verlängerten Eigentumsvorbehaltes an Vorlieferanten gemäß Ziffer 1.2.6 an XXX abgetreten hat - aufgrund einer Einzugsermächtigung berechtigt ist, über die Forderungen im Rahmen ihres normalen Geschäftsgangs zu verfügen,

The Verschachtelung is very artful. My problem is what to do with this Vorlieferant, the Vorbehalt and the Einzugsermächtigung and how to piece it together... This is my attempt:

Furthermore, the Company guarantees - that – insofar as the receivables offered in accordance with section 1.2.1 were assigned to BFS in accordance with section 1.2.6 on the basis of an extended retention of title granted to a primary supplier – the Company is authorized to dispose of the receivables as part of its ordinary business activities through direct debit authorization

Buonanotte mie fate....