How to sweep tokens from mycelium btc address back to counterwallet

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If you can get the private key from Mycelium you can sweep SJCX from it using Counterwallet (see in the FAQs about sweeping from Countewallet).
You’ll need approx 0.00056 BTC at that address to fund the transaction (send induced by sweep).

But you need to get the key from Mycelium on your own.

How to sweep XCP or BTC from a Blockchain.info wallet?

There are several formats of private keys. For this purpose we’ll focus on two: compressed and non-compressed. Counterwallet uses the compressed WIF (begins with a letter). You Have a Non-Compressed Private Key (starts with 5H, 5J, or 5K) Counterwallet uses compressed private keys, so if your private key from blockchain.info begins with a numeric character, you can’t use it in Counterwallet - you first need to get it in the compressed format. See this article for details (Case 2 on the page). …