For background information, what computer operating system is your Premiere Elements 13 running on.
Extended across....Display setting.
Temporarily for Timeline Panel and Preview Window, not Edit area Monitor. Same for versions 11, 12, and appears the same at first look at 13.
Summary of prior findings and first look current
It would appear that Premiere Elements ... Expert view Dual Monitor project display is not the same after this project is saved/closed
and re-opened to same dual monitor system. Adjustments are required to get the program workspace components back into the
monitors as seen before the save.
I wrote about that back in 2012 thread in the Adobe Premiere Elements Forum.
Again, this seems to be appling to version 13 as well.
The following written at with version 11 demo'd is applicable to version 13.
Any questions or need clarification, please do not hesitate to ask.