Quote Originally Posted by Rusty Trichome
If you're not flushing the nutrients from the old soil, and if you're not cutting the roots back...results may vary widely.
Absolutely! :thumbsup:
Ive tried it a few different ways. Results are always better when the roots have room to spread OUT, as opposed to downward, out of an already cramped pot. Merely plopping it on top of fresh soil lets it live, but the plant doesn't thrive like it would when given a root pruning.

I also like to top-dress with worm castings when starting a re-veg, but that's just an old habit...