Stock splits mean absolutely nothing. It doesn't increase value or amount of dividend paid and is no indicator of the likelihood the stock will reach the presplit value again.
As to the price increase as related to delclaration of dividends: If nothing in the market changes, typically the amount the the stock will increase until the dividend is committed to the stock holder and then you will see a sudden drop equal to the dividend. In the case of EDE this is 32 cents per quarter.
Often, a company such as EDE paying a higher then average rate is not necessary a good thing. It's an indication the market associates more risk with the company.
Yes! I remember when I was told to sell my Indianapolis Power and Light (IPL) because the price of the stock jumped 20% in one month. But, luckily for me, I really liked the 4.5% dividend yield. IPL always raised their dividend annually. Two months later I was bought out on a take-over for triple my averaged cost of the stock. All because the company had diversified into non-regulated markets. The proceeds of spinning off these divisions, retained earnings, and real estate holdings, paid for a majority of the buy-out expense. Does this sound similar enough!!!