The article explains a way to move your coins without losing your staking time. Having more transactions in the wallet than your computer can handle can cause it to become sluggish. If you have a high powered computer with lots of memory and don't stake many times per day you might never have an issue.
You are viewing a single comment's thread from:
Ah, Ok I has to read it again. But, in my experience, you just need to copy the wallet.dat file and add it to the new app data, not import keys.