Changing the URL in the Order Confirmation when running site in iframe

[DrByte]

Thank you for your help.

I tried what you sent me but still get the same result, that is, the link address is coming out wrong, as follows:

http://bmisurgery.org/store/<a+href=

Instead, it should be:

http://bmisurgery.org/index.php?ID=supplements-new

Looks like some other function is still putting the storefront directory name in the path and stripping out my stuff. Any ideas on how to fix?

I'm guessing that your language file has been customized and thus the original EMAIL_TEXT_INVOICE_URL definition is changed?
My suggestion was based on using the original content in the language file, particularly for that definition.