This document lists product fixes included in InfoDrainage 2026.4.
See Known Limitations and Issues for a list of limitations that we are aware of.
| Land Uses |
| Fixed an issue with land use calculations on duplicated phases. |
| MDX Import |
| Fixed an issue where user conduits that did not contain coordinates would be created as a custom connection with a rectangular shape based on the width and the height. |
| Catchment Areas |
| Fixed an issue where Preliminary Sizing Volumetric Runoff Coefficient was incorrectly marked as user edited. |
| Civil3D Roundtrip |
| Fixed a crash issue that occur during the export process in Civil3D. |
| MDX Export |
| Fixed crash when saving phases to MicroDrainage files where CAD layers were not visible on the plan. |
| Parts Mapping Manager |
| Fixed an issue where long delays occur after editing a mapping. |
| Stormwater Controls Item Results |
| Fixed an issue where the Pollution Concentration table was not displaying Output and Reduction values correctly if the Input values were zero. |
| Network Design Wizard |
| Fixed an issue where changes on a branch line would result in unrelated changes on the main line. |
| 1D/2D |
| Resolved an issue that caused mesh generation to unnecessarily occur on 1D/2D analysis run. |
| Catchment Runoffs |
| For SBUH, SCS, and SWMM, the Curve Number was automatically set to the default value, without needing to open the Curve Number calculator. |
| Underdrains |
| When a file was loaded with an underdrain not inside the SWC it was attached to, it would be updated to a new level inside that SWC. This improved profile views on opening these files. |
| Printing |
| Fixed a crash that occurred when generating print reports for files containing storms with invalid increase rainfall configuration. |
| Autosave |
| If a user does not have the correct folder permissions the Autosave functionality is disabled. |
| Foul Rational Results |
| Proportional Depth and Proportional Velocity is now calculated correctly. |
| Modified Rational Method |
| The generated hydrograph has the correct peak flow value. |