Dear siesta usersCan you help in this msg while using siesta?can i ignore 
it?Re-using DM from previous geometry...Re-using DM without extrapolation (not 
allowed)Density Matrix sparsity pattern 
changed.======================================Why "not allowed" for Re-using DM 
without extrapolation.Can anyone give me some hints?Thanks in 
advance.Yours,Khaldoun

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