Exporting from Field Collections and Importing to New Content Type
Some time ago I did something similar, but with normal fields. I used Views Bulk Operations.

First I've created a view which listed all the nodes of the particular node type and added the VBO checkbox to execute arbitrary PHP code.

On the view's page I've checked all the nodes and pasted in the PHP textbox the code which updated field B values based on the field A values. In your case you should create a new node based on the field collection. 

Finally, when VBO finished executing the code for all my nodes, I went to the content type fields page and deleted field A (in you case the field collection). 

Done!