Starting in Quickbooks in the middle of the tax year - end of cooperation with an accounting office.

Unfortunately, I can't find any information anywhere about starting to use Quickbooks in a situation where I'm ending my cooperation with an accounting office in the middle of the tax year and want to start accounting in the Quickbooks system.

I don't know how to enter the preliminary values ​​from the final report that my former accounting office sent me at the end of April this year.

I received a "Profit & Loss Report" and a "Trial Balance Report".

Should I simply enter the NET PROFIT value from the "Profit & Loss Report" as a sales invoice (only who to enter as a contractor?) from the first day of May?

I understand this "Trail Balance Report" a little less, because half of it contains the same information as in the "Profit & Loss Report", but then various items start to appear, such as:

4120 Computer Equipment - Cost b/fwd (Debit)

4125 Computer Equipment - Accumulated Depreciation b/fwd (Credit)

4126 Computer Equipment - Depreciation Charge for the Year (Credit)

4600 Trade Debtors (Debit)

5220 Cash in Hand (Debit)

5240 Barclays Bank (Debit)

5242 Ebay (Debit)

5400 Trade Creditors (Credit)

5430 Corporation Tax (Credit)

5431 PAYE & Social Security (Debit)

5580 Directors' Loan Accounts (Debit)

7010 Equity Share Capital b/fwd (Credit)

8000 Profit & Loss Account b/fwd (Debit)

Total : both sides (Debit and Credit) are exaclty the same.

What to do with all these values?