In that last screen shot, you are showing the morphs in the chest. Most of them are appearing in a subgroup named BB-Breast Shapes for LaFemme. With the exception of that one Breast Size Morph 1 that you show in the Morph category.

Drag the Breast Size 1 morph from the Morph folder into your BB-Breast Shapes for LaFemme folder, and place it just above Breast Size 2 so that it's in the correct order. Save your project so you don't have to repeat this again.

Now choose File > Export > Morph Injection. Click the Select None button to deselect everything, and then go through the Body actor first to select all of your FBM morphs. This should automatically check the dependency morphs in each body part, should they exist.

Then scroll down the list, and select any morphs in the Chest actor that aren't already checked. Hopefully this will pick up your chest morph and put it in the right place.

If you still have trouble, post some screen caps of the "Select Objects" dialog that appears when you are selecting the morphs to export. Both the BODY actor and the CHEST actor.