Track Record questions

I'm now in the process of completing my track record, and I'm trying to get an accurate count. I'm having two problems however:

a) If a coaster moved, and isn't listed at the park you rode it at, what do you do? (ex. Shockwave stand-up at Great Adventure, now at SFAW).

b) Some lists have a complete selection of defunct coasters that I have ridden, some don't. Example: Wood coaster at Wildwood piers, Galaxy coaster at King's Dominion. Will this be updated at some time?
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Batwing-Bow Down

I have been wondering about a) for quite some time, esp. when a coaster undergoes some trackwork changes in the process.  Also, what about forward/backward racers, etc.?  It completely changes the ride...Not really sure if this belongs in suggestions or open forum...
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Son of Drop Zone - PKI CoasterCamp I Champions!!!

If you know where the coaster has relocated at, just include it in your track record. As far as defunct coasters go, if you feel one has not been included, then contribute it.
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"The Peoples Elbow" or "The Spinaroonie?. Cant decide which is the most electrifying move in sports entertainment!!! LOL