Upload annotated Data to dataset

i would like to know if is possible to upload some annotated data to a dataset. I trying to use the same annotated datat extracted from the site, and upload it to the same dataset but without annotation seted. It is possible to do? if yes, how?

I have tryed to put the same extracted annotated folder to the pointcloud data, but when i view de pointcloud the pointcloud has none annotations.

(sorry for the bad english)