What is a proper procedure of restoring email storage after new Windows installation?

Hi,

In my old Windows I kept WLM emails storage on separate drive.

After installing the new Windows 7 and WLM 12 I did the following:

1.

Import my email accounts

2.

Redirected storage to the empty folder on separate drive.

3.

Close WLM

4.

Copy content of my old email storage folder into that new empty folder.

5.

Start WLM but WLM refuses to start.

message:

WLM could not be started. App was unable to locate its database......

How to correct that? What did I do wrong?

Your thoughts please,

/jas