keeping a plant after harvest?

I have been told that if i take the buds off and put the plant back into veg. cycle i can harvest again from it,is this true and easy?
please can i get some pro's feedback?
I have grown twice and have always derooted and cloned...

I read that you can do this if you leave some foliage on it, buti think i also read that the second time around yield and quality will be diminished... Not 100% sure on that though.
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It's called regeneration. Leave as many leaves as you can spare. To force a plant back into vegetation takes 24 hours of light, every day. Do this for 3-4 weeks or once you have some decent new growth back, and flower the bitch again.