Solving duplicates with references

[basbebe]

This might be a special case but:

I have my Web Logins in a separate folder in KeePassXC which I share with other devices.
I have separate entries in another folder which are clones with references with the sole addition of TOTP fields.

When I import this into Bitwarden (Vaultwarden) using kp2bw, I get mixed results:

Some elements are imported without any TOTP fields.
Other elements have their TOTP fields as custom fields (see #33, possibly due to an old TOTP scheme in KeePassXC).
They are all not idempotent: I get new versions of those every time I do an import