@sorrison fyi Rocky UCA doesn't package qemu, your source package is likely from update/main of bionic.
Regardless, I can replicate this bug in both cases. i.e. when migrating from 3.1+dfsg-2ubuntu3.2~cloud0 to 3.1+dfsg-2ubuntu3.7~cloud0 and from bionic 1:2.11+dfsg-1ubuntu7.28 to 3.1+dfsg-2ubuntu3.7~cloud0.
@sorrison fyi Rocky UCA doesn't package qemu, your source package is likely from update/main of bionic.
Regardless, I can replicate this bug in both cases. i.e. when migrating from 3.1+dfsg- 2ubuntu3. 2~cloud0 to 3.1+dfsg- 2ubuntu3. 7~cloud0 and from bionic 1:2.11+ dfsg-1ubuntu7. 28 to 3.1+dfsg- 2ubuntu3. 7~cloud0.