What's the possibility of WV gaining more electoral votes and Virginia losing some?

https://wtov9.com/news/local/wva-senators-approve-resolution-inviting-frederick-county-va-to-join-mountain-state-01-15-2020

http://www.wvlegislature.gov/Bill_Status/bills_text.cfm?billdoc=hcr8+intr.htm&yr=2020&sesstype=rs&i=8&houseorig=h&billtype=cr

In 1870 in a case brought by Virginia against West Virginia, the U.S. Supreme Court recognized that the rights of Frederick County to vote and decide whether it wanted to join the new state of West Virginia were “lawfully and permanently reserved” by Virginia and Congress, the West Virginia Senate resolution said.

Trump called Frederick the “mother” of seven West Virginia counties - Jefferson, Berkeley, Morgan, Hampshire, Mineral, Hardy and Grant – that all contain territory that was once part of Frederick County.

His resolution also notes there have always been strong familial ties between those counties and connections in commerce, business, religion, education, arts, society, politics, travel and recreation.

Opposition in Virginia could prevent a welcome-to-West Virginia party. Collins said he has heard from Frederick County’s board of supervisors, and its members do not favor the move. Eyewitness News left messages for several of those members but could not reach them for comment.

The final say could come in a courtroom, if the issue ever does advance to more formal action.

“As the Supreme Court of the United States left this door open when West Virginia was created, it is interesting if this would survive any constitutional attacks,” Collins said.