https://community.dynamics.com/gp/f/32/t/74246
"If you catch the fact that you closed 2 years instead of 1 before you have tried to depreciate anything, you can go into the table and change the current year using SQL. I was amazed to find out it was that easy." - Leslie
if you have not Depreciated all assets through the last day of the current fiscal year and not performed the GL Posting (GL Interface) process you should be able to change the current year.
Cheers!