How to Implement Warehousing Deals with Markup at Cost without Gifting Profits to LPs?

On warehousing deals with markup. I heard on the last AMA that it is advisable to bring the marked up deals to the fund at cost. I'm trying to understand how to make it work. Let's say I have invested $20k into a company last year and now it's worth $60k. If I put this in the fund at cost does it mean that I am gifting 80% of $40k to the LPs right away?