Modeling Guide
Knowledge Guides /How to Accept Cross-Tool Model Conversion: Semantics, Dependencies, and Round Trips
Last updated: · New Horizon Digital Outsourcing Team
Acceptance of model conversion should examine meaning, dependencies, and visual presentation separately. Opening the file is only the first check: element identity, types, relationships, and extension definitions must also be preserved, and repeated import and export must not introduce unexplained changes. Agree on supported scope and difference handling, then establish reviewable comparisons using small representative models. This is general engineering guidance, not a promise of lossless conversion between arbitrary tools.
Define Support with a Conversion Matrix
- List source and target tool versions, modeling language, extension definitions, dependent libraries, and diagram types to retain. Track elements, properties, relationships, layout, and matrices as separate checks, marking full, limited, or no support. Define support at the semantic level rather than treating support for a file format as sufficient.
- Prepare a small model covering package hierarchy, type references, property values, and cross-package relationships, then add a model that depends on an external library. Define expected conversion results and permitted display differences for each example. List element types without mapping rules before import so the model owner can decide whether to complete, substitute, or exclude them.
Check Identity Separately from Names
- Maintain a correspondence between source and target element identifiers, and check ownership, types, relationship endpoints, and property values. Renaming should not break existing references, and elements with the same name should not be merged automatically. For unresolved references, identify the source element and missing dependency so the issue can be inspected in the model.
- Compare extension definitions and model libraries separately. Identical names may conceal different properties or constraints, and creating a package with the same name does not establish semantic equivalence. Define ownership and rules for conflicts before conversion, with explicit outcomes for dependency cycles, missing libraries, and version differences. Record unexplained differences as unresolved issues.
Use Round Trips to Detect Accumulating Changes
- Convert a frozen example from tool A to tool B and back to tool A, comparing the element set, relationships, and key properties. Repeat the agreed path to check for duplicate packages, growing element counts, drifting defaults, or lost relationships. Round-trip consistency concerns model meaning; different file bytes alone do not establish a conversion failure.
- Keep a separate visual record checking the model elements represented by diagram nodes, connection endpoints, text, and readable layout. Attribute visual and semantic changes separately. A changed node position may be an accepted presentation difference; a connection pointing to another element requires correction and rechecking.
Deliver Difference Reports and Maintainable Rules
- Deliver mapping rules, known limitations, dependencies, example models, and conversion logs. Distinguish converted, skipped, failed, and manually reviewable elements so partial success is not presented as success for the whole model. Record model scale and environment when measuring runtime and resource use; do not extrapolate from a small example to every project.
- Have the receiving team perform a conversion independently and review its differences. After adding extension types or upgrading tools, recheck affected mappings and round-trip examples. State the verified tool combinations and model scope in the acceptance conclusion, retaining unsupported content in the delivery boundary for future maintenance.