Dealing with formatting tags has always left a something to be desired in CAT tools. Studio made this process slightly easier in the 2009/2011 versions, although still no hassle free.
Here’s how you can add tags to the target segments:
1) Copy source to target (Ctrl+Ins)
In cases like this, I would rather copy the source text to the target segment with a shortcut and then translate between the tags, shifting them around (Ctrl + C/Ctrl + V) if need be. You can also copy/paste tags from the source to the target segment.
2) Use QuickPlace (Ctrl+Alt+Down)
This will open a dropdown menu with a list of tags available in the segment. As you scroll down, the corresponding source tag will be highlighted.
3) Ctrl + Click on a tag
This method is great. Highlight the target text to be encapsulated by tags, then keep the Ctrl key pressed and click in the corresponding source tag; it will display automatically in the target segment at the right location.