Might be potentially interesting for Promnesia. Although also possible that the utility is very marginal and traversing history by timestamps is good enough.

• firefox: moz_historyvisits.from_visit. On mobile the field is present but seems to always be NULL
• chrome: visits.from_visit

Perhaps belongs to metadata, but also means that we'd need to keep original visit ID from the sqlite database to match the visit. And even worse, when all visits from different historic exports are merged in a single stream, the ids don't make sense anymore (they are 'internal' to a specific export in general). Although this would be possible to workaround if we somehow remap the ids in browserexport itself