Below is the end of my module_items file.
These helmets do show up as loot after battle. But when giving the heroes the chance to autoloot, the helmets disappear from the loot but isn't being used by the heroes.
So in essence, after the autloot, these helmets are gone - they somehow vanish in the process as it were.

I've gone through your code fisheye, but can't find anything that would exclude new items.
Is there an ID_items
cap involved?
Thanks for your help.

#FROM COMMUNITYHELMS
["crown_great_helmet", "Crown Great Helmet", [("crown_helm",0)], itp_merchandise| itp_type_head_armor|itp_covers_head,0,
4250 , weight(3)|abundance(10)|head_armor(60)|body_armor(0)|leg_armor(0)|difficulty(10) ,imodbits_plate ],
["flat_topped_helmet_faceplate", "Flat Topped Helmet", [("faceplate",0)], itp_merchandise| itp_type_head_armor,0,
569 , weight(2.5)|abundance(100)|head_armor(46)|body_armor(0)|leg_armor(0)|difficulty(

,imodbits_plate ],
["flat_topped_helmet_b", "Flat Topped Helmet", [("flattop",0)], itp_merchandise| itp_type_head_armor ,0,
411 , weight(2)|abundance(100)|head_armor(40)|body_armor(0)|leg_armor(0)|difficulty(

,imodbits_plate ],
["mail_coif_b", "Mail Coif", [("full_mail_coif",0)], itp_merchandise| itp_type_head_armor ,0,
156 , weight(1.50)|abundance(100)|head_armor(29)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_armor ],
["ghulam_helmet", "Ghulam Helmet", [("ghulam_helm2",0)], itp_merchandise| itp_type_head_armor ,0,
555 , weight(2.0)|abundance(100)|head_armor(43)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["nordic_helmet_b", "Nordic Helmet", [("helmet_w_eyeguard_new_alt",0)], itp_merchandise| itp_type_head_armor ,0,
450 , weight(2.25)|abundance(100)|head_armor(42)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["kettle_hat_paddedcoif", "Kettle Hat", [("kettlehat_paddedcoif",0)], itp_merchandise| itp_type_head_armor,0,
109 , weight(1.5)|abundance(100)|head_armor(25)|body_armor(0)|leg_armor(0)|difficulty(6) ,imodbits_plate ],
["kettle_hat_b", "Kettle Hat", [("kettlehelm",0)], itp_merchandise| itp_type_head_armor,0,
167 , weight(1.5)|abundance(100)|head_armor(30)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["great_helmet_b", "Great Helmet", [("maciejowskihelm",0)], itp_merchandise| itp_type_head_armor|itp_covers_head,0,
1180 , weight(3)|abundance(100)|head_armor(54)|body_armor(0)|leg_armor(0)|difficulty(10) ,imodbits_plate ],
["mamluk_helmet", "Mamluk Helmet", [("mamluk_helm",0)], itp_merchandise| itp_type_head_armor ,0,
755 , weight(2.5)|abundance(100)|head_armor(44)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["mamluk_helmet_b", "Mamluk Helmet", [("metropolian_helm",0)], itp_merchandise| itp_type_head_armor ,0,
755 , weight(2.5)|abundance(100)|head_armor(44)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["nasal_helmet_b", "Nasal Helmet", [("nasal_helmet_new",0)], itp_merchandise| itp_type_head_armor ,0,
66 , weight(1)|abundance(100)|head_armor(21)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["nasal_helmet_c", "Nasal Helmet", [("nasal_helmet_new_alt",0)], itp_merchandise| itp_type_head_armor ,0,
83 , weight(1.25)|abundance(100)|head_armor(23)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["nasal_helmet_d", "Nasal Helmet", [("nasalhelm_coif",0)], itp_merchandise| itp_type_head_armor ,0,
83 , weight(1.25)|abundance(100)|head_armor(27)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["nordic_helmet_c", "Nordic Helmet", [("nordhelm_coif",0)], itp_merchandise| itp_type_head_armor ,0,
480 , weight(2)|abundance(100)|head_armor(43)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["guard_helmet_b", "Guard Helmet", [("normanhelmwithcoif",0)], itp_merchandise| itp_type_head_armor ,0,
555 , weight(2.5)|abundance(100)|head_armor(47)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["bascinet_b", "Bascinet", [("realbascinetb",0)], itp_merchandise| itp_type_head_armor ,0,
555 , weight(2.5)|abundance(100)|head_armor(45)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["bascinet_c", "Bascinet", [("realbascinetc",0)], itp_merchandise| itp_type_head_armor ,0,
555 , weight(2.5)|abundance(100)|head_armor(45)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["skullcap_with_coif", "Skullcap with Coif", [("skullcap_coif",0)], itp_merchandise| itp_type_head_armor ,0,
258 , weight(1.75)|abundance(100)|head_armor(36)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["suttonhoo_helm", "Sutton Hoo Helmet", [("suttonhoo",0)], itp_merchandise| itp_type_head_armor ,0,
555 , weight(2.5)|abundance(100)|head_armor(44)|body_armor(0)|leg_armor(0)|difficulty(9) ,imodbits_plate ],
["valsgarde_helmet", "Valsgarde Helmet", [("valsgarde",0)], itp_merchandise| itp_type_head_armor ,0,
631 , weight(2.25)|abundance(100)|head_armor(48)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["vendel_helmet", "Vendel Helmet", [("vendel",0)], itp_merchandise| itp_type_head_armor ,0,
570 , weight(2)|abundance(100)|head_armor(45)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["manhunter_helmet", "Manhunter Helmet", [("orcmaskcheeks",0)], itp_merchandise| itp_type_head_armor ,0,
277 , weight(2)|abundance(100)|head_armor(37)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
["manhunter_helmet_b", "Manhunter Helmet", [("orcromanhelm",0)], itp_merchandise| itp_type_head_armor ,0,
237 , weight(1.75)|abundance(100)|head_armor(34)|body_armor(0)|leg_armor(0)|difficulty(7) ,imodbits_plate ],
######################################################################################
# Autoloot: Need this dummy item here to mark end of file
######################################################################################
["items_end","INVALID ITEM", [("practice_sword",0)], itp_type_one_handed_wpn|itp_primary|itp_secondary, itc_longsword, 3,weight(1.5)|spd_rtng(103)|weapon_length(90)|swing_damage(16,blunt)|thrust_damage(10,blunt),imodbits_none],
]