Adjust glide.system.locale in a prod instance

Hi All,

For a project our supplier has requested to adjust glide.system.locale system property, to be empty instead of the value we have been user over 7 years.

I have read some not so great things about adjusting this property and it is even stated in the property itself not to adjust it. But is is unclear for me why.

The goal would be to export and import data in a certain format (email and report) and this property is 'in the way' of the format.

Any advice or experience on adjusting this property? 

I've already created a case with Now Support but I am looking for experience with adjusting this system property.

Any help, thoughts or advice is appreciated!

Kind regards, Barbara