Deleting relationship silently deletes financial data

If you have a family membership created via relationship and you delete that relationship, any payments made on behalf of that membership by the secondary family member (the one receiving the membership benefits via relationship) are silently deleted. The warning given when deleting the relationship simply asks if you are sure you want to delete the relationship and mentions nothing about related data. I was a bit skeptical about the cascade so I backed up my database before I tried this. However this does seem like there should be great big warning flags that tell the user they are about to delete financial information before it will allow this at very least, and probably ask the user if they would prefer to soft-delete the related information.