invoice disappear after state: SETTLED

[d6n13l0l1v3r]

Yestorday I create a invoice with AMP = true in Zeus for receive a payment and after received it on the wallet show the settled date was Jan 01 1970 01:00:00, for that reason I went lncli and lookupinvoice hash with the fallowing output

lncli lookupinvoice 194ff82ced2409d3b94721509ce9c286afbab49c3249d8d102e2905d460a7df3
{
    "memo": "",
    "r_preimage": null,
    "r_hash": "194ff82ced2409d3b94721509ce9c286afbab49c3249d8d102e2905d460a7df3",
    "value": "978553",
    "value_msat": "978553000",
    "settled": true,
    "creation_date": "1691686291",
    "settle_date": "0",
    "payment_request": "lnbc9785530n1pjd29vnpp5r98lst8dysya8w28y9gfe6wzs6hm4dyuxfya35gzu2g963s20hesdqqcqzpgxqrrsssp5xl2h32akktaqur8k96w5v3kxfgm6c0r0un6e9y6h4drfelexafmq9q8pqqqssqlmtc7tphs5z7mvj9qtr00tmha6hv52jk35fcte975txvfx7p8vu922za3pmq2evdt6cd4an9826zd79qt2pzupzygz6mmxddyu44awqpc342mh",
    "description_hash": null,
    "expiry": "3600",
    "fallback_addr": "",
    "cltv_expiry": "40",
    "route_hints": [
    ],
    "private": false,
    "add_index": "123411",
    "settle_index": "0",
    "amt_paid": "978553000",
    "amt_paid_sat": "978553",
    "amt_paid_msat": "978553000",
    "state": "SETTLED",
    "htlcs": [
        {
            "chan_id": "878104070856966145",
            "htlc_index": "67",
            "amt_msat": "978553000",
            "accept_height": 802535,
            "accept_time": "1691686523",
            "resolve_time": "1691686523",
            "expiry_height": 802578,
            "state": "SETTLED",
            "custom_records": {
            },
            "mpp_total_amt_msat": "978553000",
            "amp": {
                "root_share": "bf14887af5fd061057c1fff220d4d26032ddf0128a5696aa4ad5427facf0b5d5",
                "set_id": "3964532d3ce142385333a6278396bebcfc110ca110643584ddcde076ac062197",
                "child_index": 2786476876,
                "hash": "a3f1631f2d160b2c15898bf5baa0fe553a90bf749f6f54ccaa2e555f08b05960",
                "preimage": "9d6c2f206cd75be1cf0dae71d9c5e479bb2a3b9a58422e1fba926a79acb79d35"
            }
        }
    ],
    "features": {
        "9": {
            "name": "tlv-onion",
            "is_required": false,
            "is_known": true
        },
        "14": {
            "name": "payment-addr",
            "is_required": true,
            "is_known": true
        },
        "30": {
            "name": "amp",
            "is_required": true,
            "is_known": true
        }
    },
    "is_keysend": false,
    "payment_addr": "37d578abb6b2fa0e0cf62e9d4646c64a37ac3c6fe4f5929357ab469cff26ea76",
    "is_amp": true,
    "amp_invoice_state": {
        "3964532d3ce142385333a6278396bebcfc110ca110643584ddcde076ac062197": {
            "state": "SETTLED",
            "settle_index": "300",
            "settle_time": "1691686523",
            "amt_paid_msat": "978553000"
        }
    }
}

and around 1 hour latter the invoice was disappear / delete from the wallet and from the node,

lncli lookupinvoice 194ff82ced2409d3b94721509ce9c286afbab49c3249d8d102e2905d460a7df3
[lncli] rpc error: code = NotFound desc = unable to locate invoice 

my setup is LND 0.16.4-beta running in Umbrel Wallet where I receive found created with Lightning Terminal version 0.10.5-alpha wallet type custodial Invoice created in Zeus v0.7.7

lnd.conf

[Application Options]
listen=0.0.0.0:9735
rpclisten=0.0.0.0:10009
restlisten=0.0.0.0:8080
maxpendingchannels=3
#minchansize=10000
minchansize=1000000
accept-keysend=true
tlsextraip=10.21.21.9
tlsextradomain=umbrel.local
tlsautorefresh=1
tlsdisableautofill=1
feeurl=
allow-circular-route=1
#alias=YourFunnyAliasNode
#color=#0f3456
# Mark unpayable, unpaid invoices as deleted
gc-canceled-invoices-on-startup=1
gc-canceled-invoices-on-the-fly=1
# Avoid historical graph data sync
ignore-historical-gossip-filters=1
# Avoid slow startup time
sync-freelist=1
# Avoid high startup overhead
stagger-initial-reconnect=1
# Avoid auto force close channels 2022-04-22
payments-expiration-grace-period=30m

https://github.com/lightningnetwork/lnd/discussions/7884#discussioncomment-6700613

[levmi]

My understanding of this issue is that there may be some flows that we need to update with regard to custodial accounts + AMP, will track this issue based on that understanding. Thanks for filing an issue!