How to deploy contract “at address”

I have following contract here on ropsten https://ropsten.etherscan.io/address/0x813870feba76f27ec1afcf79432e065a4839f7ab#code This coin needs to approve erc20 tokens from a different contract before i can use those erc20 tokens in my contract. What i did In remix i compiled the code and selected TOKEN from inside my contract, i deployed TOKEN “at address” of 0x8eb24319393716668d768dcec29356ae9cffe285 i than approved…

Migration from PoW to PoA Clique on geth

After reading chapter “Repurposing header fields for signing and voting” at https://eips.ethereum.org/EIPS/eip-225 I’ve understood the nonce field of blocks in PoW consensus blockchain is reused for another purpose in PoA Clique consensus blockchain so it makes impossible a direct import of PoW blocks into a PoA Clique blockchain. Has anybody here managed to migrate blocks…