Import duplicate invoice number in Invoice

Hello,
I just started using Akaunting on my local server. I am trying bulk upload my previous 5 years invoice
data via import.

I have some specific formats (e.g IEB-001, IEB-002). But in my case every financial year changes my invoices id set to IEB-001.

Following is the detail of the yearly invoices:

1. IEB-001 for the year 2016.
2. IEB-001 for the year 2017.
3. IEB-001 for the year 2018.
4. IEB-001 for the year 2019.
5. IEB-001 for the year 2020.

So from the above scenario, you can see every year there are duplicate number invoices. So when I am trying to access invoice detail I am getting the following issues:

1. Duplicate number invoices are giving 500 error, I check with debugging mode active it giving exception on the Invoice amount null issue.
2. All the item's subtotal, taxes, and totals are added to the first imported invoice.
3. If click on the edit invoice it shows the item list blank.

Can you please help me out to solve this issue of allowing the user to enter the same number invoice multiple times in every year data.

Unfortunately, that's not possible.