The proper way would be to ATTACH XREF using the TRANSLATOR settings to adjust UNITS... You can find this setting inside the TRANSLATOR setting button...
But... in your case...
1. Simply select all the elements that were merged
2. Make sure GROUPING is NOT on.
3. Choose the RESIZE command (for my work environment, it's under the EDIT menu / RESHAPE / RESIZE)
4. If you know the FACTOR that you are off by, simply uncheck DEFINE GRAPHICALLY & type it in here...
5. If you don't, use the DEFINE GRAPHICALLY method and click OK.
6. Once back in your plan, click on the end of a line that you know the length of, trace to the end of that line, then continue to the proper length of that line and all will be adjusted.
Duane
Visual Frontiers
AC25 :|: AC26 :|: AC27
:|: Enscape3.4:|:TwinMotion
DellXPS 4.7ghz i7:|: 8gb GPU 1070ti / Alienware M18 Laptop