Created attachment 96411 [details] Optimized file. Showing the exact problem area. cnfStyle is missing from trPr in import Code reference: http://opengrok.libreoffice.org/xref/core/writerfilter/source/dmapper/DomainMapperTableManager.cxx#398 <w:tcBorders> tag of tcPr having all values as NIL so we are not getting table border in round trip file.
NOTE: By mistake the same issue is created twice. Please follow the below bugzilla link : https://www.libreoffice.org/bugzilla/show_bug.cgi?id=76635
*** This bug has been marked as a duplicate of bug 76635 ***