user105170: If I have a key m/0'/0' and I'm using CKDpub to derive m/0'/0'/0 and then CKDPub to get m/0'/0'/0/0. How do I get access to the funds on the addresses generated by CKDPub? 
Can m/0'/0' ->  CKDPriv -> CKDPriv => m/0'/0'/0/0 key use those funds?
Another way: if I take a private/public key pair, use CKDPub on the public and CKDPriv on the private, do they yield the same public keys? 

user101498: 
if I take a private/public key pair, use CKDPub on the public and CKDPriv on the private, do they yield the same public keys? 

For unhardened childs, yes.

105170: <p>If I have a key m/0'/0' and I'm using CKDpub to derive m/0'/0'/0 and then CKDPub to get m/0'/0'/0/0. How do I get access to the funds on the addresses generated by CKDPub? </p>

<p>Can m/0'/0' ->  CKDPriv -> CKDPriv => m/0'/0'/0/0 key use those funds?</p>

<p>Another way: if I take a private/public key pair, use CKDPub on the public and CKDPriv on the private, do they yield the same public keys? </p>
 101498: <blockquote>
  <p>if I take a private/public key pair, use CKDPub on the public and CKDPriv on the private, do they yield the same public keys? </p>
</blockquote>

<p>For unhardened childs, <a href="https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki#private-parent-key--public-child-key" rel="nofollow noreferrer">yes</a>.</p>
