not sure if this is what you mean:

Coinswap from ESP to ESP2
https://novaexchange.com/coinswap/4/

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Clicking on my existing wallet application, it automatically upgraded to v0.8.0.5 Alpha, not 0.8.4.1, but works fine - am currently sending batches of ESP1 coins from there to the novaexchange swap address and converting them to ESP2 which I'll then send to the 0.8.4.1 wallet which, being overly cautious perhaps, I've downloaded and installed on another PC.

Is there an upper limit to how many ESP1 coins can be sent in one tx?