According to me, you should not rush any decision, take time, wrong decision can damage your database. Convert OST files into PST It guarantees 100% data security and ensures no data loss or file modification. It also provides you with the filter option which helps you find the specific mail by date range, subject and other attributes. You can also preview the files before converting them. For use this tool does not require any technical experience you can easily operate this software.
Know more info- https://www.vsoftware.org/ost-to-pst-converter.html
Convert OST Using Archive Method to Move Mailbox into PST
Step 1: Open your Microsoft Outlook application
Step 2: Click on “File” and then Archive
Step3: Choose the file/folder to archive and Browse the location to save the archived file
Step 4: Click Finish
Note: With the archive method, you can migrate all OST data except for the contacts.
Convert OST file to PST Using Drag and Drop Method
With this method, you can convert Mailbox items of OST file to a new PST file.
Step 1: Launch MS Outlook application
Step2: Create a new PST file in your Outlook Profile
Step 3: Choose and drag all the mailbox folders you want to move to the new PST file