Genline and (Ancestry.com) use scans of the "mormon films" which were photographed in the 1950ies/60ies. Some books in some parishes were later re-labeled, so they will have a different label in SVAR and ArkivDigital.
But as long as you mention both parish name and time covered in that book, the book can be found even if it has been re-labeled, or if it gets a different label in the future.
So in this case the important information is "Vallda household examinations 1886-1894" and "Vallda household examinations 1876-1885".
// Bo Johansson