Hi,
Sorry about the delay in answer since I've been busy with other projects.
I made a bit of research, having never heard of "Business Contact manager", which I believe is a add-on for Outlook by Microsoft.
I don't usually support DeskTask + Outlook with add-ons, since usually they are the cause of the problems and I can't support every single add-on for Outlook.
Anyway I don't seem to understand the problem is happening to you? You say : "In the Account History of Accounts in BCM you see all the e-mails, instead of the e-mails related to the contacts of the account". Can you specify in what manner is DeskTask related to this? Since DeskTask is an independent program that reads Outlook data (Calendar+Tasks) and displays them on the Desktop.
Thanks,
André Santos Carthago Software Support
http://www.carthagosoft.net