Plum IVR Support

I implemented caching to 4 hours, I replaced a vxml file 12 hours ago, when i'm doing an outbound call and i look in the call log, the file comes from the cache and is not the updated version.
The interesting part is that if i'm accessing regular IVR the file does not come from the caching(the first time) and is the right file.
How is caching implemented on your side?

Caching depends both on the header directives your IVR server sends and the global properties of your VXML documents. Caching only applies to URL's ending in .vxml or .xml.

See http://www.plumvoice.com/docs/dev/devel ... ce:caching for a complete description of our caching system.