[GRASS-user] How update vector layers?

[Thybério Luna Freire]

Hi Vincent,
I've tried the following command:

v.patch -ae input=sugarcane,sugarcane_update output=sugarcane --o

it returns:
ERROR: Output vector map <sugarcane> is used as input

I'm using the -e and -a flags and overwriting the old vector layer, but the
message is the same.

I'm doing anything wrong?

Both vector maps have exactly the same columns and there aren't identical
attributes:

Cat (integer)
Cane_id(Integer)

thanks,
Thyberio
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