Can my LLC loan money to my RE LLC via Plastiq?

[Iris Olivas]

I plan on going through Fund n Grow to acquire business credit cards. I was wanting to liquidate them using Plastiq to use as a down payment for an investment property. However, my lender wants to see the funds in my LLC beforehand. Can my real estate holdings LLC loan money to my real estate acquisition LLC and pay it via Plastiq? It would be going from one business to another, but they both happen to be my own businesses. Anyone have any insight on this? Thanks!!