( I am the guy from this support thread about the "date" field handling: http://wordpress.org/support/topic/handling-custom-fields-type-date?replies=4 )
I bought the premium extension of the plugin.
We use a custom field "date". Calendar shows up nicely, and the data seems to be caught, but there are 2 issues not working:
1. The plugin seems not to read my date preferences - we have dd.mm.yyyy setup. So it inserts the date field like MM/DD/YYYY.
2. The field i am editing is a custom metabox field from the "EDIT FLOW" plugin. I can bulk & quick edit it as date or even as text. but whatever option i use, i "ADDS" the entered text to the field. It does not replace the value of the field.
E.g. before the edit the field shows 09.Oct 2013.
I bulk/quick edit e.g. "24. December 2014".
The field shows after that: 09.Oct 201324. December 2014 . (like all "glued together".
You can check it out. Just quickly install "Edit Flow" plugin and enable custom metabox.
Hope you can help.