English to French Bus/Financial Insurance

Police d'assurance construction

"indemnify the Insured in respect of the loss of Gross Profit actually sustained due to the reduction in Turnover and the increased cost of working, if during the Period of Insurance the Insured Property suffers Damage insured , thereby causing an interference in the construction / erection work and/or testing schedule resulting in a delay in commencement of and/or interference with the Insured Business.

En gros, retard dans l'achèvement des travaux > pas (moins) de chiffre d'affaires pour le client.

Classique, mais alors pourquoi "advance" ? En quoi ce terme modifie-t-il la police perte de bénéfice classique? Pas clair...

Merci "in advance"...