Yes, the medias was moved after the job completed. They were moved to the new set on 12-oct-2006 - but that's still more than 6 weeks.
If I try changing the Overwrite protection period to e.g. 6 HOURS, we should be on the safe side, but the result is identical.
The only overwriteable media is the not-yet-full media B2B000049 (see below).
If I try changing the Overwrite Protection Period to 20 weeks, B2D000049 now becomes protected until 19-02-2007, so it looks like it's only full medias that cannot be overwritten regardless of the Overwrite Protection Period setting.
Sample of the medias listed in the "HD-TotalBackups" Media set:
Media Label Allocated Date Overwrite protected until Avail. Capacity
B2B000049 02-10-2006 Overwritable 499Mb
.
.
B2B000057 02-10-2006 Inifinite - Don't allow overwrite 0
B2B000058 02-10-2006 Inifinite - Don't allow overwrite 0
B2B000059 02-10-2006 Inifinite - Don't allow overwrite 0
B2B000060 02-10-2006 Inifinite - Don't allow overwrite 0
.
.
B2B000079 17-10-2006 Inifinite - Don't allow overwrite 0
B2B000080 17-10-2006 Inifinite - Don't allow overwrite 0
B2B000081 17-10-2006 Inifinite - Don't allow overwrite 0