Expedition Navigation Software 
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When using the Send WP to Instrument button, only 11 WP are transferred correctly and visible in the Vulcan MFD. The remaining WP's are gone. There will also be a few null-WP with garbage-text present in the WP-list. It does not seem to matter if the total number of WP's are 23 or 85 for example. The behavior is consistent over 2 different Vulcan MFD's and most SW/drivers are up to scratch; the number 11 is universal ;-).
B&G support do not have anything to add, but to maybe try a higher than standard NGT-1 baud rate.
Any thoughts on what to do?
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The Actisense NGT-1 has a maximum message size. I suspect this is what is being exceeded.
Making the names smaller should give you some more. 15 seems to be the upper limit - from testing with mark names of just one character.
I see Exp isn't truncating the waypoint number value, which might explain the gibberish at the B&G end. Fixed for the next update.