So here is a copy of my EDD history for my visit to HIP 67396.
02/08/2020 22:27:21 Jumped with carrier KHN-GQZ to HD 126199 A Type Fleet Carrier in system HD 126199
02/08/2020 22:27:21 At KHN-GQZ Type:Fleet Carrier in system HD 126199, Faction:FleetCarrier
02/08/2020 22:11:31 Friends Online:2
02/08/2020 22:10:54 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:723, Jump Range:500.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 22:10:42 Carrier Jump Request To HD 126199, Body HD 126199 A
02/08/2020 22:10:15 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:723, Jump Range:500.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 22:09:29 Carrier Deposit Fuel Amount:720, Fuel Level:723
02/08/2020 22:09:19 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:3, Jump Range:0.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 22:07:03 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:3, Jump Range:0.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 22:06:18 Cargo Ship Cargo, 720 items
02/08/2020 22:06:15 Cargo Transfer Tritium->To ship
02/08/2020 22:04:15 At KHN-GQZ Type:Fleet Carrier in system HIP 67396, Faction:FleetCarrier
02/08/2020 22:04:15 Loadout Ship:Imperial Cutter, Name:endeavour, Ident:bodx99, Modules:48, Hull Health:100.0%, Hull:175,924,977 cr, Modules:203,061,997 cr, Rebuy:18,949,351 cr
02/08/2020 22:04:06 Shipyard Swap Swap Federal Corvette for a Imperial Cutter
02/08/2020 22:03:27 Outfitting 0 items available
02/08/2020 22:03:27 Stored Modules Total:82
02/08/2020 22:02:37 Stored Ships At starport:33, Other locations:0
02/08/2020 22:02:08 At KHN-GQZ Type:Fleet Carrier in system HIP 67396, Faction:FleetCarrier
02/08/2020 22:02:08 Loadout Ship:Federal Corvette, Name:compass rose, Ident:K49, Modules:50, Hull Health:100.0%, Hull:160,221,910 cr, Modules:454,623,001 cr, Rebuy:30,742,251 cr
02/08/2020 22:01:58 Shipyard Swap Swap Anaconda for a Federal Corvette
02/08/2020 22:01:25 Shipyard
02/08/2020 22:01:25 Stored Ships At starport:33, Other locations:0
02/08/2020 21:59:41 At KHN-GQZ Type:Fleet Carrier in system HIP 67396, Faction:FleetCarrier
02/08/2020 21:59:41 Npc Crew Paid Wage Milagros Harvey, 0 Cr
02/08/2020 21:58:05 Receive Text 2 Texts from npc
02/08/2020 21:58:05 Docking Granted KHN-GQZ on pad 5
02/08/2020 21:58:04 Docking Requested KHN-GQZ
02/08/2020 21:57:57 Module Info Modules:19
02/08/2020 21:57:01 Receive Text From:ISS IRON VENGEANCE KHN-GQZ on npc: No fire zone entered.
02/08/2020 21:55:02 Supercruise Exit At HIP 67396 A in HIP 67396, Type:Star
02/08/2020 21:52:40 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:177, Jump Range:337.7ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:51:08 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:177, Jump Range:337.7ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:50:02 Fuel Scoop 1.1t, Total:16.0t
02/08/2020 21:49:45 Supercruise Entry HIP 67396
02/08/2020 21:49:40 Charging FSD Supercruise
02/08/2020 21:49:01 FSS Discovery Scan Progress:100.0%, Bodies:2, Others:1
02/08/2020 21:48:36 Reservoir Replenished Main:14.9t, Reservoir:1.1t
02/08/2020 21:44:56 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:177, Jump Range:337.7ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:41:58 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:177, Jump Range:337.7ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:41:02 Carrier Jump Request To HIP 67396, Body HIP 67396 A
02/08/2020 21:40:44 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:177, Jump Range:337.7ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:27:51 Friends Online:2, Offline:1
02/08/2020 21:16:50 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:351, Jump Range:500.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:10:22 Carrier Jump Request To HD 126199, Body HD 126199 A
02/08/2020 21:09:54 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:351, Jump Range:500.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 21:09:51 Module Info Modules:19
02/08/2020 21:00:58 Friends Online:1, Offline:1
02/08/2020 20:59:08 FSS Signal Discovered ISS IRON VENGEANCE KHN GQZ, Station
02/08/2020 20:59:08 FSS Discovery Scan Progress:100.0%, Bodies:2, Others:1
02/08/2020 20:59:08 Detailed scan of B Bluish-White Main Sequence A star, Mass:1.50SM, Age:272.0my, Radius:1.2SR, Dist:5429.5ls, Name:HIP 67396 B
02/08/2020 20:59:08 FSS All Bodies Found 2 @ HIP 67396
02/08/2020 20:58:52 Undocked KHN-GQZ, Type:Fleet Carrier
02/08/2020 20:58:26 Autoscan of A Luminous Blue Main Sequence B star, Mass:3.66SM, Age:272.0my, Radius:2.2SR, Dist:0.0ls, Name:HIP 67396 A
02/08/2020 20:58:21 Npc Crew Paid Wage Milagros Harvey, 0 Cr
02/08/2020 20:58:20 Jumped with carrier KHN-GQZ to HIP 67396 A Type Fleet Carrier in system HIP 67396
02/08/2020 20:58:20 At KHN-GQZ Type:Fleet Carrier in system HIP 67396, Faction:FleetCarrier
02/08/2020 20:46:25 Friends , Online
02/08/2020 20:42:00 Carrier Stats Name:ISS IRON VENGEANCE, Call Sign:KHN-GQZ, Fuel Level:470, Jump Range:500.0ly, Carrier Balance:184,051,235 cr, Reserve Balance:42,158,234 cr, Available Balance:141,893,001 cr, Reserve Percent:23.0, Tax Rate:3.0
02/08/2020 20:41:46 Carrier Jump Request To HIP 67396, Body HIP 67396 A
HIP 67396 is not in EDSM.
Any other explanation is welcome, as is a suggestion how I can get HIP 67396 system data into EDSM, without going back there. And even that may not work.
Note that HD 126199 , the system I jumped to, is recorded in EDSM by expugnax (me) at about the right time. I always have EDD and EDSM linked, so it did work that time.