Heyya guys. Just got in from rehearsal. No geneticist here, just a hobbyist with lots of experience with neos.
In my opinion blue jelly is derived from BV. That means if bred together they should breed blue.
Now, having said that, I have to state it depends on where the blue resides in the dna as to whether or not they will throw any wilds. Sometimes var have different locations although called the same thing. (Ie. 2 strains called the same because different people worked on them in different ways, but their phenotype was the same- but not genotype.) My suspicions are that you will be safe though...but no guarantee.