Mutual attachment fails to recreate after Replace With Other

[riverwanderer]

1. Piece A forms an Attachment to piece B

2. Piece B has the same Attachment, configured to form a mutual attachment:

3. Later on, Piece A replaces itself with Piece C. Piece C initialises using an attachment trait identical to Piece A's.

When configured as outlined above, Piece C fails to form a mutual attachment.

Workaround:
Prior to executing the Replace With Other, Piece A drops the attachment to Piece B, by the execution of this clearing action adding to the Attachment trait shown in (1) above:

Piece C will then form its mutual Attachment to Piece B.