cvsave failed due to inconsistency error

hello,

I am currently facing some osbcur message when calling cvsave function.

Indeed, I have just accumulated 3 .cvt files into one unique cvdatagroup object called cumulCvData (using cvload function to read each cvt file then adding the three read objects).

Then I try to save the cumulative results into one file but when executing the following command:

cvsave('cumul_covdata.cvt', cumulCvData)

it fails with the following message

Consistency Error: Handle does not match the slsf object

Found in model cov object 543

While checking properties object from modelcov object 543.

Does anyone know what this message means ?

Best regards.