A reshuffle at Cornwall Council means Falmouth and Penryn and Helston and the Lizard are to lose community network manager Charlotte Chadwick.
The news has been met with anger by one councillor, who has fears about the impact it will have.
Porthleven and Helston West Councillor Andrew Wallis said: "I understand people do move, but the area has lost someone embedded in the area and she has been replaced by someone who works part-time."
Ms Chadwick is being moved to the Camborne, Redruth and Pool area.
The areas she currently covers will be taken over by two other managers.
A spokesman for Cornwall Council said: "As part of the rationalisation of the localism team, brought about by the recent budget decision, changes have been made to the areas served by each community network manager as well as a change in management structure.
"Whilst this will cause some disruption in the short term it will potentially bring longer term benefits with the exchange of ideas and best practice from area to area.
"This is not the first time that community network managers have changed areas and we are very confident that the changes will go ahead smoothly."
But Mr Wallis said in his internet blog: "It turns out that while councillors were on the campaign trail, the powers-to-be have decided to change the community networks around.
"What is worse is no consultation or courtesy has been given to the councillors and more importantly the town and parish council of the area.
"Has the council not learned anything from the last four years?
"As many will know Charlotte has worked very hard in the area, and has brought tens of thousands of funding into the area.
"Worse, projects in the area might stop because the resources and staff are not there.
"I really get the feeling this process was rushed."
