You might have an easier time converting to a different format which Proton Pass can import, rather than the Proton Pass export format. eg. Convert your file to the Bitwarden JSON format (Bitwarden provide examples and documentation on their format) and then import that file into Proton Pass instead. (IIRC they support Bitwarden's format)
Is there a reason you can't use the generic CSV format?
Regardless, I have tested and it doesn't look like those IDs are used during import. Import works perfectly fine with a Zipfile containing an unencrypted JSON file, as formatted by ProtonPass export, with all those base64 strings (itemId
, itemUuid
, shareId
) removed or blanked out:
JSON example
{
"encrypted": false,
"userId": "",
"vaults": {
"": {
"name": "test",
"description": "",
"display": {
"color": 0,
"icon": 0
},
"items": [
{
"data": {
"metadata": {
"name": "test-login",
"note": ""
},
"extraFields": [],
"type": "login",
"content": {
"itemEmail": "",
"password": "password",
"urls": [],
"totpUri": "",
"passkeys": [],
"itemUsername": "username"
}
},
"state": 1,
"aliasEmail": null,
"contentFormatVersion": 6,
"createTime": 1733128994,
"modifyTime": 1733128994,
"pinned": false
}
]
}
},
"version": "1.25.0"
}
When re-exporting those imported values, they have new IDs even when you include the old IDs from the original export, so they're obviously not being used. My guess is they're just some sort of random UUID.
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