The 'Edit DNS Zone' page in WHM is being removed as of cPanel version 90 due to deprecation/removal of various components upon which it depends. The 'DNS Zone Manager' page in WHM, is intended as its direct replacement but requires more steps.
The 'DNS Zone Manager' interface does only allow one record to be modified at a time, resulting in an overall higher number of clicks required to accomplish a given task if it involves modification of multiple records.
For reference, the case number is CPANEL-33635. Follow this article to receive an email notification when a solution is published in the product.
We understand the concerns regarding the 'DNS Zone Manager' interface, and we welcome your feedback. Our developers have published a survey where you can express your concerns, to which we would encourage your response: https://usabi.li/do/4d4b667a7e1d/bb92