possible unreleased regression - customised template changed on site running 5.10rc
I am logging as I don't want to lose sight of this - my 5.10.rc site just sent me the default message template not my custom one. The msg_text was not customised but msg_html (and msg_subject were) - I think we'd better do some testing to make sure there isn't a missed scenario
Note that the templates need 'please print this for your records ' removed & it might be worth doing in conjunction with this digging