We left ours in Sweden and draw it here — moving a pension can trigger tax events you don't expect, so we got one session with a cross-border adviser before touching anything. Best money we spent. The Taxes and Retirement parts of the Spain guide are a good primer before that conversation.
My husband and I are finally making the move to the Spanish coast next year and the pension side is the bit keeping me up at night. Do you leave it where it is and draw from abroad, or move it? What did you wish someone had told you before you started?