First, update to 8.3.
Then, what do you mean by mail search field?
.msg files are not email files. In other words, they are not a part of the Outlook system. You have deliberately removed them from Outlook. So search tactics for Outlook or other email may not be relevant for .msg files.
There are plenty of messages out in Google land on the challenge of indexing and searching the contents of msg files.
You seem to have devised a way to do what you want. Perhaps that it how things are supposed to work.
Then, what do you mean by mail search field?
.msg files are not email files. In other words, they are not a part of the Outlook system. You have deliberately removed them from Outlook. So search tactics for Outlook or other email may not be relevant for .msg files.
There are plenty of messages out in Google land on the challenge of indexing and searching the contents of msg files.
You seem to have devised a way to do what you want. Perhaps that it how things are supposed to work.