DNS SERVFAIL after moving Domain between AWS accounts

I moved a domain (route53) from one AWS account to another. I had trouble making it resolve using configuration in the new account. Eventually I found out that it somehow was in both AWS account's route53 (ie remained registered in the old one after the move) and that seems to have messed it it up. I tried to remedy it:

• I removed the entry in the old account.
• I recreated the domain and hosted zone in the new account
• I also added completely new subdomains to try if they work
• No luck

Here is the issue with dig:

❯ dig <REDACTED> NS

; <<>> DiG 9.10.6 <<>> <REDACTED> NS
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: SERVFAIL, id: 58108
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 1

;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 512
; OPT=15: 00 17 5b 32 30 35 2e 32 35 31 2e 31 39 36 2e 34 32 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[205.251.196.42] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 17 5b 32 36 30 30 3a 39 30 30 30 3a 35 33 30 34 3a 32 61 30 30 3a 3a 31 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[2600:9000:5304:2a00::1] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 17 5b 32 36 30 30 3a 39 30 30 30 3a 35 33 30 36 3a 36 34 30 30 3a 3a 31 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[2600:9000:5306:6400::1] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 17 5b 32 30 35 2e 32 35 31 2e 31 39 38 2e 31 30 30 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[205.251.198.100] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 17 5b 32 36 30 30 3a 39 30 30 30 3a 35 33 30 33 3a 32 65 30 30 3a 3a 31 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[2600:9000:5303:2e00::1] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 17 5b 32 30 35 2e 32 35 31 2e 31 39 33 2e 35 35 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[205.251.193.55] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 17 5b 32 30 35 2e 32 35 31 2e 31 39 35 2e 34 36 5d 20 72 63 6f 64 65 3d 52 45 46 55 53 45 44 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..[205.251.195.46] rcode=REFUSED for <REDACTED>/ns")
; OPT=15: 00 16 41 74 20 64 65 6c 65 67 61 74 69 6f 6e 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 20 66 6f 72 20 62 6f 6c 64 64 61 74 61 2e 63 6c 6f 75 64 2f 6e 73 ("..At delegation <REDACTED> for <REDACTED>/ns")
;; QUESTION SECTION:
;<REDACTED>.			IN	NS

;; Query time: 87 msec
;; SERVER: 192.168.1.1#53(192.168.1.1)
;; WHEN: Wed Jun 12 15:59:00 BST 2024
;; MSG SIZE  rcvd: 530