1.  No, you can have exclusive Rights Protected images though.

2.  No, the license is not for editorial, it just restricts usage, unlike RF.  You shouldn't sell as licensed if an image has sold as RF.  This could cause problems.  Don't sell licensed images on Alamy if they have previously sold on SS.

3.  Yes, I think editorial photos have to be RM with alamy.

All the answers are on this page but it is a bit complicated.

http://www.alamy.com/licensing.asp

1.  No, you can have exclusive Rights Protected images though.

2.  No, the license is not for editorial, it just restricts usage, unlike RF.  You shouldn't sell as licensed if an image has sold as RF.  This could cause problems.  Don't sell licensed images on Alamy if they have previously sold on SS.

3.  Yes, I think editorial photos have to be RM with alamy.

All the answers are on this page but it is a bit complicated.

http://www.alamy.com/licensing.asp

This is not quite correct.  I had the same question regarding editorial images that had been previously sold on SS.  Since Alamy's new system required them to be RM (they were pictures of Barak Obama), I asked member services what to do since they had previously been sold as RF editorial on SS.  They replied the images should be listed as Licensed and the restrictions set such that they could only be sold as editorial.  The fact that they had been sold previously as RF was not a problem.  Since the pictures were already on their site and I could not change the image type, they had me send them the I.D, numbers of the images and they changed them from RF to Licensed.  They then had me go in and set the restrictions to editorial only.

Edit to add following :

Here's the reply I received from Alamy on this topic:
We can change the license type of your images from RF to Licensed provided they have not yet been downloaded or sold before. Will you please get back to us with the Alamy references of the images for which you would like to effect this change? Once the license type is changed you may set the appropriate restrictions so that the image will be available only for editorial purposes.

"We can change the license type of your images from RF to Licensed provided they have not yet been downloaded or sold before."

If they have been sold on SS as RF, how can you then sell them on Alamy as licensed?

That's downloaded or sold on Alamy, not SS.