Problem in merging restart files (parallel run in Linux) - Forum - Delft3D Flexible Mesh

Hi everybody,

I am going to make a merged restart file from the results of an initialization run.
I wrote the list of all *_rst.nc files in a text file. Then I used the following command in the Linux terminal:
dfmoutput mapmerge --listfile list_restart_files.txt

But I receive the following messages without any merged restart file.
Info: mapmerge: all input files are of old format.
Info: mapmerge: for *_rst.nc files, topology connectivity variables (except for "FlowLink") are not merged.
Warning: mapmerge: could not retrieve coordinates of net nodes from `WS13_new_04_0000_20130101_060000_rst.nc'. 
Warning: mapmerge: could not retrieve ElemLink from `WS13_new_04_0000_20130101_060000_rst.nc'.  

The Delft3Dfm version is 2022.03 and using a similar mapmerge command, I can successfully create the merged 'map' Netcdf file. 

Could you please share your experience in this regard?