Bulk create subscribers not re-creating deleted subscribers

Good day! I am experiencing an issue with bulk subscribers creation endpoint. Steps to reproduce as below: 1. Create new subscribers with the bulk creation endpoint, the result is 201 with the created subscribers in the created object (img 1). 2. Get subscribers show the created subscribers (img 2). 3. Delete the subscribers (img 3 & 4). 4. Create the same subscribers with the bulk creation endpoint, the result is 201 with the subscribers in the updated object (img 5). 5. Get subscriber does not show the created subscribers (img 6 & 7). 6. Create the subscriber testing-3 with the create subscriber endpoint (img 8). 7. Get subscriber shows the subscriber (img 9). Is the delete endpoint actually soft deleting the subscriber and the bulk create subscriber endpoint tries to update the deleted status of those subscribers? If so, why are those updated subscribers not showing? Please assist on this matter. Thank you!