Konman719, is this the problem you're having? just so we're all on the same page.
If you have read some post about this somewhere before, the reason behind this is because there is a routine in some part of the ROM that limits the number of map names the game has.
FR/LG has 202 maps (I think) in the ROM and in that "routine" (asm?) there is a value there "CA" (CA->202) which from what I remember is the limit.
And from other posts that I've read, the reason why "Create New Name" is greyed out is because if you add a new map name (bypassing the limit) it will corrupt other data in the ROM.
So unless the author of A-map makes a way to get rid off the limit, we can only do for now is to REPLACE map names and not ADD new names.