Glaive Super heavy getting the shaft in 8th.

So I bought my Imperial armour book for my Spacemarines for my Fellblade and Glaive super heavies, and to my dismay the Glaive was not in the book; however both the Falchion and the Fellblade were. Concerned I emailed Forgeworld asking about the rules and received this email:
Re: Glaive super heavy.
Forgeworld to you
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Hi my name,
Thank you for your email. The Legion Glaive is a Horus Heresy only vehicle and is not a 40k one, this is why no rules appear for it in the new Index books.


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Simon Kirkham
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So now I'm left with home brewing rules for a 250 some dollar model I bought back in 7th for 40k, and since I know no one who plays 30k this doesn't help me in the slightest.