I believe I have swept the private keys somehow. Wasn't I supposed to use the original wallet keys of the actual wallet from which I have initiated the sweep?

So basically if I remember right this might be a very possible scenario.

I had the funds in some wallet -> transferred to this new wallet which was created from scratch. Then I have saved the seed somewhere. Then I believe I have use the SWEEP on this wallet and pasted some private keys. I'm not sure which private keys or how did I do it. So what can I do in this situation?

This is starting to make sense now...