New Share

I created a share based on the original size of my Drobo. I have since increased the size number of drives and would like to increase the size of my Share used for TM backup. I have read that shares can not be modified. I created a new share with the desired size. I am trying to move the .sparsebundle file to the new share for backup, but it just says “preparing to move.” I left it for approx. 24hr thinking it may just take some time, but nothing. Any ideas?

edit: Now trying to copy from old Drobo share to external HD, to new share. Results are the same thus far.