CDR Entries Duplicated since upgrade

Hello

I have upgraded from Freepbx 1.89 32-bit to 5.211.65-9 v2.11 64-bit and performed a restore.

All seems fine however I have just noticed that every call is duplicated in CDR and I can’t see why.

This is an example of one call that has two entries:

2014-03-24 12:14:56 1395663296.2 "test "<3001> "test "<3001> Dial 7898 ANSWERED 00:02
2014-03-24 12:14:56 1395663296.2 "test "<3001> "test "<3001> Dial 7898 ANSWERED 00:02

Any help appreciated.
Thanks