Hi, Ivan.
Thank you for contacting the Microsoft community.
As we understand from your post, you passed Exam AZ-303 prior to its retirement, and you would like to confirm if you would earn the Microsoft Certified: Azure Solutions Architect Expert Certificate by completing Exam AZ-305. We are happy to help!
Please note that, when an Exam is replaced or retired, it will still qualify as a valid requirement for any Certification Paths that involved said Exam for up to one year after its retirement.
Prior to the retirement of Exams AZ-303 and AZ-304 on March 31, 2022, the requirements to earn the Microsoft Certified: Azure Solutions Architect Expert Certificate were:
The requirements to earn this Certification were listed on the Certification page, as shown in the image below.

This means that, by passing Exam AZ-305, all requirements will be met, and the Microsoft Certified: Azure Solutions Architect Expert Certification will be present on your Dashboard within 48 hours.
We hope that you find this information to be helpful. If so, please let us know by choosing “Yes” where it says, “Did this solve your problem?” located in the bottom right corner of this post.
If we do not receive a response, the case will be closed and locked after one business day.