What I observed is that they stop the ICO then switch to IEO. Care to name which project does both ICO and IEO at the same time? With regards to the not disclosing the total funds raised, almost every project is doing that. It must be because of legal issues.
"legal Issues" is the crypto currency regulated? Because i think people can raise money for their projects through any means they desired to do. Either through ico or ieo and they can be used both in other to raise money. I have not come across any projects using both to raise funds for their projects but I did not see them breaking any laws by doing that. However, you should just be careful in investing in that type of projects as many investors have lost money through that.