When my Mum moved from Residential to EMI it was a difficult time for us. It is a very clear sign of things getting more difficult, which is hard.
Mummy was moved because her behaviour was getting harder to manage - agitation, falls etc and the EMI Unit had a slightly better staff to resident ratio - this is often the case in homes. Initially it took Mummy a few weeks to settle and it is harder not being able to visit.
I think for Mummy, EMI, with an easier physical environment for hoisting, personal care etc and being with others who were similar, and therefore not upset or bothered by her behaviour, was what she needed. She still had activities and was very fond of the staff.
It is so hard at the moment not being able to visit, maybe have a chat with the manager about why this is happening? Initially I was upset when Mummy moved. Change is always hard but I think it was better for her in the long run.