Transferring Payroll Subscription to New Company

Using Premier Contractors 2024 Desktop and Desktop Do it Yourself Payroll

We have had a payroll subscription for 20+ years.  We opened a new entity last year (different name and FEIN) and have a QB company file for the new entity.  Same Intuit account and email for both companies.  We want to start processing payroll in the new entity/company file starting 2nd Qtr 2026 (April 3,2026).  I believe I can transfer the subscription by turning payroll off in the old company (edit-preferences-payroll-no payroll) and turn on payroll in the new company (edit-preferences-payroll-full payroll).  Can someone verify that this is correct?  

Also, since we are changing companies during the fiscal year, I will need to process the payroll forms for the 1st Qtr 2026 in the old company, and process/print W2s in January 2027.  Will I be able to do go back and do that once I turn payroll off?  Note:  I cannot enter all the employee's 1st Qtr YTD wages in the new company because the new company has a new FEIN and the 1st Qtr paychecks and taxes were all paid under the old company name/FEIN so they have to be separate.

Thanks in advance for help with this.  I did try calling Intuit customer service and they were not really understanding what I was asking, so I asked for a payroll specific customer service number, and when I called it there was message that you could no longer talk to a live person!  So if anyone has a live person active number I can call that would be helpful.