It doesn't look like LM will be added back into QB.  I watched a video preview of 2023 and noticed the Bank menu didn't have a LM entry. Figured this would be the case. But if I'm wrong, ignore this post.

I plan to roll my own LM solution by the end of this year, 2022. I've already verified the ability to programmatically create bills that include the Long Term principle and interest breakdowns. Basically, I can reproduce what the QB 2021 LM does in terms of creating bills. Ultimately, an amortization schedule with various parameters will be included. 

 
I'm posting this message for one reason only: that is to help alleviate the stress we're all feeling with the removal of LM. And notwithstanding the unexpected, I'm serious about a solution by the end of the year. I'll be using the QB SDK, so the experience will be similar to the way TurboTax interacts with QB. 

I'll occasionally check back on this thread no later than Q1 2023 should there be any questions. 

BTW, I made the jump to 2022 in August. But before that, I generated the loan bills for the remainder of the year using the 2021 LM.