How to show relabel sub cluster on the original cluster in Seurat

Hi all!

I have some data that I’ve been clustering using Seurat. I ended up with 30 clusters, but I subset 3 of these clusters are reclustered them in order to get more specific cell types. I now have 7 clusters in this subset, but want to relabel the cells in the original object with the 30 clusters.
Is this possible? Would really appreciate some help!