I am confused!
v126.96.36.199 was released on Friday 18th April.
At 1510 on Saturday 19th April, ERIK posted that waypoints from a multiple list could not be inserted into a FP.
At 1628 on Saturday 19th April, SECONDATOR posted : "It's a bug that we have recently discovered and working on to get fixed."
I am pretty sure that the release would not have gone ahead if this problem was already known to exist.
However, the question has to be asked : "why was this bug not discovered during pre-release testing?"
You should enable the INFOBAR on the MCDU3 and then you will read what to do next e.g. do not follow the GSX instructions but wait until the APU is available within the CL...... and then the external power automatically is deconnected by the CL ......