Messed up file names

[Gerald Mathias]

I guess I did something dumb. I wanted to move my GnuCash to a new
computer, so I copied over the mygnucash folder. Now the new files come out
with these weird names:

mygnucash.gnucash.20171115161912.gnucash.20180115171928.gnucash
mygnucash.gnucash.20171115161912.gnucash.20180115171929.log
mygnucash.gnucash.20171115161912.gnucash.20180116114841.log
mygnucash.gnucash.20171115161912.gnucash.20180116115105.gnucash
mygnucash.gnucash.20171115161912.gnucash.20180116115105.log
mygnucash.gnucash.20171115161912.gnucash.LCK
mygnucash.gnucash.20171115161913.log
mygnucash.gnucash.20171229114235.log

I guess November 15 is the date I did the copy. Is there any way to get rid
of that part of the naming process?

I had also considered starting over, from 2018-01-01 on the new computer.
Maybe that is the better option? Would simply erasing all the current
accounts and setting them up anew do the trick?