In general, Chess.com has explained that variants are not high on the priority development list because so few people play them.
Exporting games from Chess.com to Lichess
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For those who want to export their CrazyHouse games to Lichess, when you export, you have to manually change the N moves.
For example. Chess.com will absurdly have the N stated as "18. B@g3 $146@e2+" (N=$146).
Change it to a "N" and you can import it to Lichess for CrazyHouse analysis. For eg, it should read "18. B@g3 N@e2+" No idea why Chess,com does not have a ZH analysis.