stop changing of format

I want Excel to stop changing my set word wrap funtionality from off to on
when copying or deleting data in a workbook. I will copy data from one sheet
to another only to have Excel reset the WordWrap funtion back to on from off
causing the cell with the data to get much larger. If I wanted the feature ,
I would have enabled it. It doesn't happen to every set of data copied, just
on occasion. I deleted some data from a row and then it reset the feature
from off to on for a set of nearby data. It isn't a problem that causes loss
of data, but a nuisance to have to go back and turn it off again. The data
copied did not have it turned on in the from location, so it is not like it
is changing formats when copied. If there were a way to set it to default of
off, that would be the best way to solve this.