Global Illumination alternatives

I just had to double check incase I had somehow made that mistake, but no the lighting is exactly the same. There is only a one sky light and one directional light in each scene. Even though I have now deleted the old lights and re-added them, I have made sure all the settings were the same. Either way the result is the same as before I deleted the old lights. This all happened after I moved the maps to a different folder, then a bit later I was switching between a couple of the maps when I realised that the lighting had changed from earlier. It is possible that the change had happened before I moved the maps assets, or even after, because I wasn’t working on the lighting at the time I wasn’t really taking that much notice. I just can’t think or see any other changes that might have caused this.