Quicken 2007 date format problem in Mavericks

Question

Objective: Get date format in dd/mm/yyyy format in Quicken 2007 (Lion compatible version).
Current OS: Mavericks 10.9.4
Hardware: Retina MacBook Pro & iMac 27" 3.2Ghz
Problem:
On my rMBP with Mavericks 10.9.4, I’m able to get Quicken 2007 data in dd/mm/yyyy format, as desired.
On my new iMac (late 2013) with 10.9.4, Quicken recognises the System date formats dd/mm/yyyy (setting up a new register shows System date format) but the registers and data are all in m/d/yy.
Quicken prefs are set to Canadian, so date formats should automatically be in dd/mm/yyyy, but aren't.
The Quicken data file is identical on both Macs. The original file goes back to 1991, and has been through all Mac OS iterations since then.
Pre-Lion, I remember that the workaround was to set the Language & Region to something (English / US, don’t remember which) and then change date formats. Anyway, the dd/mm/yyyy stuck, through Lion and Mavericks on my rMBP, but is causing a problem in the iMac.
My guess is that Quicken is unable to / blocked out from accessing System date formats in Mavericks 10.9.4.
Wondering if there’s some way to make Quicken access the Mavericks System date format, and stick to it?
Possible approach: If some expert in these forums knows how Mavericks works under the hood, how it allows other apps access to System Prefs like date formats etc., perhaps a script or Terminal command could force Quicken 2007 to recognise and accept date formats from System Prefs (Language & Regional settings).
I'd really appreciate the help; needless to say, the Quicken data is vital to my work.

Answer 1

Hi Marlon,
The OS Local definitions. Different countries have different date formats for their location. Check the date format of the OS CultureInfo settings.
Regards,
Vítor Vieira