How to squash/merge migrations in flyway
We had the same problem on my project and decided to do a roll up of versions already deployed to production. To roll up incremental changes into 1 file, I ran the migration from scratch in a database then dump (export) back the whole database in 1 SQL file.I named the file using the last version of the migration. In your case V1_300__rollup.sql. Then you can continue adding new versions: V2_1, V2_2, etc. and repeat when you want to roll up.