Does anyone know if the autoresponders are using a cache system at any point? We have a client that is having problems with using the "RE: %subject%" flag and reporting the wrong subject line;

The autoresponder setup that uses RE: %subject% as the subject line, and it often returns the subject of a previous email.

For example, I'll receive an email with subject: Email Test 1
The autoresponder will go out correctly: RE: Email Test 1

I'll then receive an email with subject: Email Test 2
And the subject of the autoresponder will say: RE: Email Test 1

It is as if the subject is being incorrectly cached.

Does anyone else have this kind of issue or possible solution?