2023 Profit Sharing contribution made to 2024 PEP

I have a plan that joined a PEP with an effective date in January of 2024.  The assets have already transferred to the PEP.

Now, they would like to make their 2023 PS contribution.  Can they make this to the PEP ?

In a perfect world, it could be made to the prior recordkeeper before the transfer of assets, but that is not the case.

Any issue in making the 2023 PS to the PEP ?

Thanks!

If the transfer-to-PEP paperwork mentioned transfer of *all* assets/liabilities of the prior plan, that should sweep up the receivable as well, no?