I've gone through the Spinward Marches file, and there's little mechanics conversion necessary from what I see. All that really need be done is a lot of typing, as you're basically transcribing info from the LBBs into the help file. A scanner would be helpful in this instance.
1. Charts: There is LBB Traveller data if I recall for all of the sectors covered by Traveller Navigator, so mapping isn't a problem.
2. Glossary: Could be folded in with Library Data with little to no impact.
3. Encounters: I don't know if there is a LBB equivalent of the Encounters tables included in TNE, but it's not that difficult to make up one of your own here if one in fact isn't included somewhere in the LBBs.
4. Starship Operations: If there is a LBB version, it should go here. Otherwise, this is one of the few instances where there is a mechanics conversion, but thanks to BITS and their universal task conversion, that's not hard to do either.
5. Ship Stats: Fighting Ships. Nuff said.
6. Starship Combat: Basic Traveller or High Guard starship combat? Hell, put both in there.
7. Tables: The appropriate versions of the LBB Starship combat tables (both basic and High Guard versions) should go here, along with the few miscellaneous tables, such as travel time to 100 planetary diameters and the like.
8. Tasks: No task system in LBB Traveller like MegaTraveller and TNE. This is the one section of the help file I would dump in a heartbeat.
9. Credits: Hey, who made this anyway? Keep this.
I'm honestly not trying to argue here. All I am trying to do is illustrate the point that it really isn't as difficult mechanics wise as you might think. Especially when the mechanics have in most cases been spelled out for you.
