Sometimes due to Internet gliches media doesn’t download from Ancestry.com when merging census records. To check, go to the Sources tab and find a Census Source. Search down all of the citations for a media icon on the l-hand side. If the media is missing the merge will need to be re-run. Select the citation, select the person that is the Head of Household and go to the Web Search tab and re-run the merge.
How To Check For Missing Census Media