one time backup as base for schema with differential backups

Hi ,

i created a one-time full backup over the weekend because i urgently needed a backup for my client.

Now i created the final schedule (daily differential and weekly and monthly full backups) but the first differential backup (today) won't run before a full backup has run.

Is it possible to use my one time full backup as a base for my differential backups that run now during the week.

Now my first backup won't run untill friday , because thats the first day that there is a full backup scheduled ...

F.