repotting question... with-holding water after?

[Lady Tottington]

Hi all! Ok, I repotted my two cattleyas that I had overpotted, and I potted the phal-dends that I got (one of which after I untangled the roots and separated the keiki's, I ended up with five plants!

Anyhoo... I soaked the bark prior to repotting, and I soaked my plants as well, which greened up the mass of roots, so I am good to go there, but I was reading somewhere on here that you want to wait to water after repotting? Can someone explain this to me? I don't think I have the full understanding behind this logic. It seems to me that you would want to water regularly, but I think I was reading that you wanted to with-hold water to encourage the roots to search out water and grab hold of the medium?

Thanks for your help!