Severe issue with Powering up :'(

[MishL]

i powered up an Eevee with high Iv but It was only about 127 cp. I had 109,000+ dust so I powered it up to nearly complete the arc. I exited and was down to 59,000 dust. The Eevee reverted to 127cp!!! I powered once more in case server had disconnected or something . It went up to 141 and no more, arc was back to low. I lost 50k dust and many candies.
Has anyone experienced anything similar? Is it a known issue or am I Just out of luck?? Is there anything I can do about it?
Needless to say I am not very happy about it.
Thanks in advance
Michelle