Hoping that someone can offer some advice on this....

I'm creating a complex excel sheets with lots of relative, mixed, and
absolute references. Once I'm done, I'd like to copy a block within the
sheet to create a new block. The trouble is that all the absolute
references within the block are pointing to reference within the old block.
I can fix them manually, but I want to copy the block several times, and
it's a lot of work to change each one

What I'd like to to do is, once things are as I want them, convert all of
the Absolute references in the completed block to relative so that when I
past a new block, the addressing will be correct. One trick I've found is
that I can convert cells formulas from Absolute to relative one by one using
the F4 key, but that's not ideal either (although, it's easier than editing
each cell). Anyone know if there is a way to convert a block of cells to
relative mode in one shot? Thanks for any advice.