embedded invisible lines DXF

[joostbosman]

hello,

in the attached dxf file there are some lines that are not visible in autocad. but when i import the file in another program (a program to make a water jet cutting file) the lines become visible and the program wants to use them (attached screenshot).  i tried to purge/overkill/audit but the lines still remain. it is a standard file we use were we import from another drawing and remove the previous imported lines. the lines are from an older project that were deleted. i can make a new file easily but is seems as a temporary fix untill it happens again. 

the lines are from a dynamic block we use (attached file). we do explode the blocks and use delconstraint to revert the block to only lines. 

does anyone know how the lines got embedded into the file? and how to prevent it or fix it. 

[h_s_walker]

There are external reference files which are not attached with your DXF. The image below is what I got from opening it in LT2025

[joostbosman]

the image you send is what it looks like in autocadf for me also. but the problem is the lines you cant see in autocad to the left of the lightblue lines (attached screenshot). the screenshot was not taken from autocad but a different program.

where can i find the external reference files?

[h_s_walker]

Could it be the attached Excel file which is causing the problem. See the image below

[joostbosman]

the excel file is a table where we reference what standard stock items we use for a project. it should not contain any dynamic blocks. i don't know enough of autocad to determine if this is the problem tho. i don't know how to remove the reference. i tried to remove the path but nothing happens. the reference remains

[Libbya]

The difficulty with diagnosing is the fact that the lines do not show up in AutoCAD but you're asking a group of AutoCAD users.  

You say the extra lines are from the dynamic block you posted.  Have you tried deleting all the construction lines and constraints from within the block prior to exploding the insertions?  Do the extra lines still appear?  

[joostbosman]

it is a very inconsistent problem we have. i cannot recreate it on purpuse. it doesn't happen all the time but more like once every 2 months. also it is not specific to this dynamic block. ive seen this problem with other blocks aswell.

i always thought it was a corruption of some kind of the file itself. we do have a workaround but i thought might aswell ask other people who know way more about autocad then me.

it might be also good to mention that the attached block isnt directly inserted into the dxf file. it is from a previous project. we use copybase to copy the ''cutting lines''(the blocks) from a drawing to our ''cuttingfile''(DXF file). once a project is done the 'cutting lines' are removed and a new project is imported. the lightblue lines are the only lines that sould always be in the file.

[Libbya]

I don't see any way to help.  The issue cannot even be seen using AutoCAD.  It occurs inconsistently for you even with your unknown software.  You haven't answered the specific questions that I have asked.  That combination pretty much ties my hands and prevents me from offering any assistance.  

My best advice would be for you to develop your own diagnostic method in order to determine exactly what causes the issue on your end.