Modification in Smart P&ID
The Smart P&ID software generates node numbers during consistency checking. If existing segments on the P&ID are modified, then those node numbers might also be modified. This situation occurs when placing either a branch on an existing segment or a segment break, causing the link between Smart P&ID and PDS to become outdated. In most cases, changes in Smart P&ID mean changes in the piping model. Resolving this type of discrepancy improves the integrity of the design data.
Modification of a PDS Model
Physical modification of segments with PDS commands such as Move Piping, Move Vertex, Move Pipeline End, and so forth, do not affect Smart P&ID to PDS Piping Data Transfer. All branch component placement commands break the segments and potentially lose links with Smart P&ID. While placing drain connections, which are not shown on P&IDs, it is better to use the Revise Attributes > Load from P&ID command on the header segment before placing the drain connection or branch components. Then all three segments are linked with the proper segment in Smart P&ID. After creating the branch drain segment, make sure that the P&ID to Piping Transfer mode attribute is set to Partial for the branch segment. Transfers done after placing a drain require that you use the Revise Attribute command three times.