Auto Dedup failure


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This morning (2/12) I received an RS failed recording email for a recording that was actually made 11/30
Device: Humax (dc:d3:21:57:a5:f3)
At least one failed recording has been detected in your
media library. The following recording(s) failed:

/Noddy In Toyland/The Enchanted Warbler
Looking at the directory I see:
-rw-rw-rw-  1 root root 171929088 Nov 30 08:02 _media_My Video_Noddy In Toyland_Noddy I.ts
-rw-rw-rw-  1 root root      2072 Dec  2 10:10 The Enchanted Warbler.hmt
-rw-rw-rw-  1 root root    527616 Nov 30 08:02 The Enchanted Warbler.nts
For some reason the .ts file has been mis-renamed to include the path name within the file name!

I can manually rename the .ts but it is very strange that it got misnamed in the first place - no other recording had been. I can see nothing related in the logs.
Looking at the recording via webif is no use since it refuses to display any information
File     /media/My Video/Noddy In Toyland/The Enchanted Warbler.hmt
Size     2.02 KiB
Info       libpostproc    52.  0.100 / 52.  0.100
/media/My Video/Noddy In Toyland/The Enchanted Warbler.hmt: Invalid data found when processing input
Though the hmt utility is able to display
Humax# hmt 'The Enchanted Warbler.hmt'
Title:The Enchanted Warbler
ITitle:The Enchanted Warbler
Channel:5 (Channel 5)
Folder:/mnt/hd2/My Video/Noddy In Toyland/
Filename:The Enchanted Warbler
Genre:Children (80)
EPG:The Enchanted Warbler: Charming animation. Noddy and Mr Plod embark on an ornithological quest to locate the rare enchanted warbler. (S1 Ep 36) [S]

Recording Status: Valid (OK)
Flags: SD,New,Unlimited Copies,Shrunk,Deduped,Addetection,
Copy count:0

Scheduled start:1448869800 (Mon Nov 30 07:50:00 2015)
Scheduled duration:600
Recording start:1448869859 (Mon Nov 30 07:50:59 2015)
Recording end:1448870519 (Mon Nov 30 08:01:59 2015)
Stored duration:660
Play resumes at:0 seconds in.
Timezone offset:0

Service ID (SID):8500
Event ID:21939
Transport Stream ID (TSID):8206
Originating Network ID (ONID):9018
Programme Map Table PID (PMTPID):1600
Video PID:1601
Audio PID:1602
Bookmarks:0 =

Note: I am going to turn off auto dedup for this folder - it is far more trouble than it is worth

I cant use the TVDB since the series information in the synopsis bears no relationship at all with theTVDB - the synopsis says it is (S1 Ep 36) The Enchanted Warbler but theTVDB says
Noddy In Toyland
Season 2
29 : Mr Plod And The Enchanted Warbler
Noddy In Toyland
Season 1
36 : Noddy Gets Lost

Using just the synopsis without TVDB integration is slightly better but five episodes (so far) have been flagged as duplicate (A charming animation)