I tried to import privkey that I generated in DashCore using "dumpprivkey" to Android Dash wallet. I noticed that all the privkeys begin with X... on the beginning of the privkey. Importing that privkey ended with an errormessage. Then I tried some privkeys generated on https://paper.dash.org and they were imported without any problem. I noticed that all the privkeys generated on the website begin with 7... on the beginning of the privkey. Are the private keys generated in DashCore different? Is that the reason that they can not be imported to the Android Dash Wallet?