There are two methods you can use for legacy document conversion, and each has its merits and drawbacks.
When you open Word (.doc) files directly in FrameMaker, the document flows into FrameMaker's default template. This method can require repetitive cleanup of items stored in the FrameMaker default template that is used to display the resulting FrameMaker file.
This is an intuitive, quick way to get at text in a Word document.
If you have an existing template, you will need to import that template separately. This leaves a lot of redundant cleanup across each document.You will have to delete unused FrameMaker template items such as:
The File > Open command is useful for independent files, or when no real FrameMaker template exists. If short-term speed or a looming deadline is more important than long term accuracy and control, this is the way to go.
If you or your group has an existing template, then choose the File > New > Document command, locate your template, and open it.
FrameMaker presents you with a blank untitled document containing all the formatting needed for your project. Because the document is untitled, you may now save with an appropriate name without the risk of overwriting the original template file.
Once the name and location of the file are set, use the File > Import > File command to locate your Word import file (see Figure 1). You'll need to choose the Copy Into Document option to allow direct editing of the text in FrameMaker.

Figure 1. Locate your Word import file
In most situations, you will want to set the Import Text Flow by Copy options (see Figure 2). Typical benefits of using the options in the figure below:

Figure 2. The Import Text Flow by Copy options
All the styles needed are in the same location as your converted Word document.
The Import function requires that you create style-naming conventions and a template file prior to conversion.
If you are (or have access to) a FrameMaker expert and a solid template file, this is how I recommend you work.