diff --git a/arFramework3/ImportExport/arImportPEtab.m b/arFramework3/ImportExport/arImportPEtab.m
index 7fc911f5..e8eaa8b8 100644
--- a/arFramework3/ImportExport/arImportPEtab.m
+++ b/arFramework3/ImportExport/arImportPEtab.m
@@ -90,6 +90,9 @@ function arImportPEtab(name, doPreEq)
 [~,~,eventStruct] = arParseSBML([sbmlmodel.folder filesep sbmlmodel.name]);
 arLoadModel(strrep(sbmlmodel.name,'.xml',''))
 
+% 
+ar.config.backup_modelAndData = false;
+
 PEobs = [strrep(name{2},'.tsv',''),'.tsv'];
 PEmeas = [strrep(name{3},'.tsv',''),'.tsv'];
 PEconds = [strrep(name{4},'.tsv',''),'.tsv'];
@@ -97,8 +100,7 @@ function arImportPEtab(name, doPreEq)
 
 T = cell(2, length(ar.model));
 for m = 1:length(ar.model)
-    [T{m,1}, T{m,2}] = ...
-        arLoadDataPEtab(PEmeas,PEobs,m);
+    [T{m,1}, T{m,2}] = arLoadDataPEtab(PEmeas,PEobs,m);
 end
 Tcond = arLoadCondPEtab(PEconds, T);